Explore the signs and symptoms, genetic cause, and inheritance pattern of various health conditions.
- D-bifunctional protein deficiency
- D-glycerate dehydrogenase deficiency, see Primary hyperoxaluria
- DA1, see Distal arthrogryposis type 1
- DA2A, see Freeman-Sheldon syndrome
- DA2B, see Sheldon-Hall syndrome
- DA9, see Congenital contractural arachnodactyly
- Dacryosialoadenopathia atrophicans, see Sjögren syndrome
- DACS, see Congenital stromal corneal dystrophy
- DADA2, see Adenosine deaminase 2 deficiency
- Dandy-Walker complex, see Dandy-Walker malformation
- Dandy-Walker cyst, see Dandy-Walker malformation
- Dandy-Walker deformity, see Dandy-Walker malformation
- Dandy-Walker malformation
- Dandy-Walker syndrome, see Dandy-Walker malformation
- Danon disease
- Darier disease
- Darier's disease, see Darier disease
- Darier-Ferrand tumor, see Dermatofibrosarcoma protuberans
- Darier-Hoffmann tumor, see Dermatofibrosarcoma protuberans
- Darier-White disease, see Darier disease
- Dark dot disease, see Dowling-Degos disease
- DAT, see Alzheimer's disease
- Davidson disease, see Microvillus inclusion disease
- DBA, see Diamond-Blackfan anemia
- DBH deficiency, see Dopamine beta-hydroxylase deficiency
- DBMD, see Duchenne and Becker muscular dystrophy
- DBP deficiency, see D-bifunctional protein deficiency
- DBS, see Donnai-Barrow syndrome
- DBS/FOAR syndrome, see Donnai-Barrow syndrome
- DC syndrome, see Subcortical band heterotopia
- DCD, see Terminal osseous dysplasia
- DCMA, see Dilated cardiomyopathy with ataxia syndrome
- DCMA syndrome, see Dilated cardiomyopathy with ataxia syndrome
- DCO, see Léri-Weill dyschondrosteosis
- DCS, see Chanarin-Dorfman syndrome
- DDC deficiency, see Aromatic l-amino acid decarboxylase deficiency
- DDD, see Dowling-Degos disease
- DDD, see C3 glomerulopathy
- DDD/MPGNII, see C3 glomerulopathy
- DDPAC, see Frontotemporal dementia with parkinsonism-17
- DDS, see Denys-Drash syndrome
- DDU, see Vibratory urticaria
- De la Chapelle dysplasia, see Atelosteogenesis type 2
- De Lange syndrome, see Cornelia de Lange syndrome
- De Morsier syndrome, see Septo-optic dysplasia
- De Toni-Caffey disease, see Caffey disease
- De Vivo disease, see GLUT1 deficiency syndrome
- Deafness and myopia, see Deafness and myopia syndrome
- Deafness and myopia syndrome
- Deafness and pili torti, Bjornstad type, see Björnstad syndrome
- Deafness due to old age, see Age-related hearing loss
- Deafness syndrome, progressive, with blindness, dystonia, fractures, and mental deficiency, see Deafness-dystonia-optic neuronopathy syndrome
- Deafness with goiter, see Pendred syndrome
- Deafness with LAMM, see Congenital deafness with labyrinthine aplasia, microtia, and microdontia
- Deafness, cochlear, plus, see Deafness and myopia syndrome
- Deafness, congenital, and functional heart disease, see Jervell and Lange-Nielsen syndrome
- Deafness, onychodystrophy, osteodystrophy, and mental retardation syndrome, see DOORS syndrome
- Deafness-dystonia-optic atrophy syndrome, see Deafness-dystonia-optic neuronopathy syndrome
- Deafness-dystonia-optic neuronopathy syndrome
- Deafness-imperforate anus-hypoplastic thumbs syndrome, see Townes-Brocks Syndrome
- Deafness-infertility syndrome
- Deafness-oncychodystrophy-osteodystrophy-intellectual disability syndrome, see DOORS syndrome
- Deafness-onychoosteodystrophy-intellectual disability syndrome, see DOORS syndrome
- Deafness-retinitis pigmentosa syndrome, see Usher syndrome
- DEB, see Dystrophic epidermolysis bullosa
- Debrancher deficiency, see Glycogen storage disease type III
- Decorin-associated congenital stromal corneal dystrophy, see Congenital stromal corneal dystrophy
- DEE/EE-SWAS, see Epilepsy-aphasia spectrum
- DEE4, see STXBP1 encephalopathy
- Deep fibromatosis, see Desmoid tumor
- Defect of enterocyte intrinsic factor receptor, see Imerslund-Gräsbeck syndrome
- Defective color vision, see Color vision deficiency
- Deficiency mutase phosphoglycerate, see Phosphoglycerate mutase deficiency
- Deficiency of 3-hydroxyacyl-CoA dehydrogenase, see 3-hydroxyacyl-CoA dehydrogenase deficiency
- Deficiency of 3beta-hydroxysterol delta24-reductase, see Desmosterolosis
- Deficiency of acyl-CoA dehydrogenase family member 9, see ACAD9 deficiency
- Deficiency of ADA2, see Adenosine deaminase 2 deficiency
- Deficiency of alkaline phosphatase, see Hypophosphatasia
- Deficiency of alpha-glucosidase, see Pompe disease
- Deficiency of alpha-mannosidase, see Alpha-mannosidosis
- Deficiency of beta-ureidopropionase, see Beta-ureidopropionase deficiency
- Deficiency of butyryl-CoA dehydrogenase, see Short-chain acyl-CoA dehydrogenase deficiency
- Deficiency of butyrylcholine esterase, see Pseudocholinesterase deficiency
- Deficiency of cathepsin A, see Galactosialidosis
- Deficiency of cytochrome-b5 reductase, see Autosomal recessive congenital methemoglobinemia
- Deficiency of factor XIII, see Factor XIII deficiency
- Deficiency of ferroxidase, see Aceruloplasminemia
- Deficiency of glucose-6-phosphate dehydrogenase, see Glucose-6-phosphate dehydrogenase deficiency
- Deficiency of glutathione synthase, see Glutathione synthetase deficiency
- Deficiency of glutathione synthetase, see Glutathione synthetase deficiency
- Deficiency of glycoprotein complex IIb-IIIa, see Glanzmann thrombasthenia
- Deficiency of guanidinoacetate methyltransferase, see Guanidinoacetate methyltransferase deficiency
- Deficiency of guanine phosphoribosyltransferase, see Lesch-Nyhan syndrome
- Deficiency of hydroxymethylglutaryl-CoA lyase, see 3-hydroxy-3-methylglutaryl-CoA lyase deficiency
- Deficiency of hypoxanthine phosphoribosyltransferase, see Lesch-Nyhan syndrome
- Deficiency of isobutyryl-CoA dehydrogenase, see Isobutyryl-CoA dehydrogenase deficiency
- Deficiency of lactate dehydrogenase, see Lactate dehydrogenase deficiency
- Deficiency of luteinizing hormone-releasing hormone with ataxia, see Gordon Holmes syndrome
- Deficiency of malonyl-CoA decarboxylase, see Malonyl-CoA decarboxylase deficiency
- Deficiency of methionine adenosyltransferase, see Hypermethioninemia
- Deficiency of methylcrotonoyl-CoA carboxylase, see 3-methylcrotonyl-CoA carboxylase deficiency
- Deficiency of molybdenum cofactor, see Molybdenum cofactor deficiency
- Deficiency of monoamine oxidase A, see Monoamine oxidase A deficiency
- Deficiency of N-acetylglucosamine-phosphate mutase 1, see PGM3-congenital disorder of glycosylation
- Deficiency of N-glycanase 1, see NGLY1-congenital disorder of deglycosylation
- Deficiency of phosphoglucomutase 3, see PGM3-congenital disorder of glycosylation
- Deficiency of phosphotriose isomerase, see Triosephosphate isomerase deficiency
- Deficiency of platelet fibrinogen receptor, see Glanzmann thrombasthenia
- Deficiency of platelet glycoprotein 1b, see Bernard-Soulier syndrome
- Deficiency of steroid 11-beta-monooxygenase, see Congenital adrenal hyperplasia due to 11-beta-hydroxylase deficiency
- Deficiency of steroid 17-alpha-monooxygenase, see 17 alpha-hydroxylase/17,20-lyase deficiency
- Deficiency of the aminoacylase-1 enzyme, see Aminoacylase 1 deficiency
- Deficiency of the interleukin-36 receptor antagonist, see Generalized pustular psoriasis
- Deficiency, Laki-Lorand factor, see Factor XIII deficiency
- Deficient alpha granule syndrome, see Gray platelet syndrome
- Degenerative joint disease, see Osteoarthritis
- Degenerative polyarthritis, see Osteoarthritis
- Degenerative retinoschisis, see X-linked juvenile retinoschisis
- Del(18q) syndrome, see Distal 18q deletion syndrome
- Del(18q) syndrome, see Proximal 18q deletion syndrome
- Del(3p) syndrome, see 3p deletion syndrome
- Del(4p) syndrome, see Wolf-Hirschhorn syndrome
- Deletion 17p syndrome, see Smith-Magenis syndrome
- Deletion 17q12, see 17q12 deletion syndrome
- Deletion 22q11.2 syndrome, see 22q11.2 deletion syndrome
- Deletion 22q13 syndrome, see 22q13.3 deletion syndrome
- Deletion 22q13.3 syndrome, see 22q13.3 deletion syndrome
- Deletion 2q37, see 2q37 deletion syndrome
- Deletion 3p, see 3p deletion syndrome
- Dementia of the Lewy body type, see Dementia with Lewy bodies
- Dementia praecox, see Schizophrenia
- Dementia with amyotrophic lateral sclerosis, see Amyotrophic lateral sclerosis
- Dementia with Lewy bodies
- Dementia, Lewy body, see Dementia with Lewy bodies
- Demyelinogenic leukodystrophy, see Alexander disease
- Dense deposit disease, see C3 glomerulopathy
- Dent disease
- Dent's disease, see Dent disease
- Dentatorubral-pallidoluysian atrophy
- Dentinogenesis imperfecta
- Dento-osseous dysplasia, see Cleidocranial dysplasia
- Dentoleukoencephalopathy, see Pol III-related leukodystrophy
- Dents disease, see Dent disease
- Denys-Drash syndrome
- Deoxyguanosine kinase deficiency
- Depression
- Depression in a seasonal pattern, see Seasonal affective disorder
- Depression, bipolar, see Bipolar disorder
- Depression; seasonal, see Seasonal affective disorder
- Depressive disorder, see Depression
- Der(22) syndrome due to 3:1 meiotic disjunction events, see Emanuel syndrome
- Dercum disease, see Adiposis dolorosa
- Dercum's disease, see Adiposis dolorosa
- Dercum-Vitaut syndrome, see Adiposis dolorosa
- Dermatofibrosarcoma, see Dermatofibrosarcoma protuberans
- Dermatofibrosarcoma protuberans
- Dermatofibrosis disseminata lenticularis, see Buschke-Ollendorff syndrome
- Dermatofibrosis lenticularis disseminata, see Buschke-Ollendorff syndrome
- Dermatofibrosis lenticularis disseminata with osteopoikilosis, see Buschke-Ollendorff syndrome
- Dermatofibrosis, disseminated, with osteopoikilosis, see Buschke-Ollendorff syndrome
- Dermatolysis, see Cutis laxa
- Dermatomegaly, see Cutis laxa
- Dermatoosteopoikilosis, see Buschke-Ollendorff syndrome
- Dermodistortive urticaria, see Vibratory urticaria
- DES-VLDLR, see VLDLR-associated cerebellar hypoplasia
- DeSanctis-Cacchione syndrome, see Xeroderma pigmentosum
- Desmoid fibromatosis, see Desmoid tumor
- Desmoid tumor
- Desmosterolosis
- Developmental and epileptic encephalopathy 1
- Developmental and epileptic encephalopathy 4, see STXBP1 encephalopathy
- Developmental and epileptic encephalopathy, type 4, see STXBP1 encephalopathy
- Developmental and/or epileptic encephalopathy with spike-wave activation in Sleep, see Epilepsy-aphasia spectrum
- Developmental delay-facial dysmorphism syndrome due to MED13L deficiency, see MED13L syndrome
- Devic disease, see Neuromyelitis optica
- Devic neuromyelitis optica, see Neuromyelitis optica
- Devic syndrome, see Neuromyelitis optica
- Devic's disease, see Neuromyelitis optica
- DFNMYP, see Deafness and myopia syndrome
- DFSP, see Dermatofibrosarcoma protuberans
- DGI, see Dentinogenesis imperfecta
- DGSX, see Simpson-Golabi-Behmel syndrome
- DGUOK deficiency , see Deoxyguanosine kinase deficiency
- DGUOK-related mitochondrial DNA depletion syndrome, hepatocerebral form, see Deoxyguanosine kinase deficiency
- DHA crystalline nephropathy, see Adenine phosphoribosyltransferase deficiency
- DHMN-V, see Distal hereditary motor neuropathy, type V
- DHMN6, see Spinal muscular atrophy with respiratory distress type 1
- DHTR deficiency, see Androgen insensitivity syndrome
- Diabetes insipidus and mellitus with optic atrophy and deafness, see Wolfram syndrome
- Diabetes insipidus renalis, see Arginine vasopressin resistance
- Diabetes insipidus secondary to vasopressin deficiency, see Arginine vasopressin deficiency
- Diabetes insipidus, central, see Arginine vasopressin deficiency
- Diabetes insipidus, diabetes mellitus, optic atrophy, and deafness, see Wolfram syndrome
- Diabetes insipidus, nephrogenic, see Arginine vasopressin resistance
- Diabetes insipidus, neurogenic, see Arginine vasopressin deficiency
- Diabetes insipidus, neurohypophyseal, see Arginine vasopressin deficiency
- Diabetes insipidus, pituitary, see Arginine vasopressin deficiency
- Diabetes mellitus arising in pregnancy, see Gestational diabetes
- Diabetes mellitus type 1, see Type 1 diabetes
- Diabetes mellitus, adult-onset, see Type 2 diabetes
- Diabetes mellitus, congenital insulin-dependent, with fatal secretory diarrhea, see Immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome
- Diabetes mellitus, gestational, see Gestational diabetes
- Diabetes mellitus, insulin-dependent, see Type 1 diabetes
- Diabetes mellitus, insulin-resistant, with acanthosis nigricans, see Type A insulin resistance syndrome
- Diabetes mellitus, non-insulin-dependent, see Type 2 diabetes
- Diabetes mellitus, pregnancy related, see Gestational diabetes
- Diabetes mellitus, type 1, see Type 1 diabetes
- Diabetes mellitus, type 2, see Type 2 diabetes
- Diabetes mellitus, type II, see Type 2 diabetes
- Diabetes mellitus, type II, with deafness, see Maternally inherited diabetes and deafness
- Diabetes, pregnancy-induced, see Gestational diabetes
- Diabetes-hypogonadism-deafness-intellectual disability syndrome, see Woodhouse-Sakati syndrome
- Diamond-Blackfan anemia
- Diaphorase deficiency, see Autosomal recessive congenital methemoglobinemia
- Diaphragmatic hernia, abnormal face, and distal limb anomalies, see Fryns syndrome
- Diaphragmatic hernia-exomphalos-corpus callosum agenesis, see Donnai-Barrow syndrome
- Diaphragmatic hernia-exomphalos-hypertelorism syndrome, see Donnai-Barrow syndrome
- Diaphragmatic spinal muscular atrophy, see Spinal muscular atrophy with respiratory distress type 1
- Diaphyseal aclasis, see Hereditary multiple osteochondromas
- Diaphyseal dysplasia, see Camurati-Engelmann disease
- Diaphyseal dysplasia associated with anemia, see Ghosal hematodiaphyseal dysplasia
- Diaphyseal hyperostosis, see Camurati-Engelmann disease
- Diaphyseal osteosclerosis, see Camurati-Engelmann disease
- Diarrhea, fatal infantile, with trichorrhexis nodosa, see Trichohepatoenteric syndrome
- Diarrhea, polyendocrinopathy, fatal infection syndrome, X-linked, see Immune dysregulation, polyendocrinopathy, enteropathy, X-linked syndrome
- Diarrhea, syndromic, see Trichohepatoenteric syndrome
- Diastrophic dwarfism, see Diastrophic dysplasia
- Diastrophic dysplasia
- DICER1 syndrome
- DICER1-related pleuropulmonary blastoma cancer predisposition syndrome, see DICER1 syndrome
- DIDMOAD, see Wolfram syndrome
- DIDMOAD syndrome, see Wolfram syndrome
- DIDMOADUD, see Wolfram syndrome
- Diffuse arterial calcifying elastopathy of infancy, see Generalized arterial calcification of infancy
- Diffuse cerebral sclerosis of Schilder, see Alpers-Huttenlocher syndrome
- Diffuse globoid body sclerosis, see Krabbe disease
- Diffuse lentiginosis, see Noonan syndrome with multiple lentigines
- Diffuse Lewy body disease, see Dementia with Lewy bodies
- Diffuse myofascial pain syndrome, see Fibromyalgia
- DiGeorge syndrome, see 22q11.2 deletion syndrome
- Digitocutaneous dysplasia, see Terminal osseous dysplasia
- Digitorenocerebral syndrome, see DOORS syndrome
- Dihydrolipoamide dehydrogenase deficiency
- Dihydrolipoyl dehydrogenase deficiency, see Dihydrolipoamide dehydrogenase deficiency
- Dihydropyrimidinase deficiency
- Dihydropyrimidine dehydrogenase deficiency
- Dihydropyrimidinuria, see Dihydropyrimidine dehydrogenase deficiency
- Dihydropyrimidinuria, see Dihydropyrimidinase deficiency
- Dihydrotestosterone receptor deficiency, see Androgen insensitivity syndrome
- Dihydrouracil amidohydrolase deficiency, see Dihydropyrimidinase deficiency
- Dilated cardiomyopathy 3B, see X-linked dilated cardiomyopathy
- Dilated cardiomyopathy with ataxia syndrome
- Dionisi Vici Sabetta Gambarara syndrome, see Vici syndrome
- Dionisi-Vici-Sabetta-Gambarara syndrome, see Vici syndrome
- DIS, see Deafness-infertility syndrome
- Disaccharide intolerance I, see Congenital sucrase-isomaltase deficiency
- Discogenic disease, see Intervertebral disc disease
- Discogenic disorder, see Intervertebral disc disease
- Disinhibition-dementia-parkinsonism-amytrophy complex, see Frontotemporal dementia with parkinsonism-17
- Disorder of asparagine metabolism, see Asparagine synthetase deficiency
- Disorder of intervertebral disc, see Intervertebral disc disease
- Disorder, migraine, see Migraine
- Disseminated lupus erythematosus, see Systemic lupus erythematosus
- Disseminated sclerosis, see Multiple sclerosis
- Distal 10q deletion syndrome, see 10q26 deletion syndrome
- Distal 18q deletion syndrome
- Distal arthrogryposis type 1
- Distal arthrogryposis type 2B, see Sheldon-Hall syndrome
- Distal arthrogryposis, type 2A, see Freeman-Sheldon syndrome
- Distal arthrogyropsis type 9, see Congenital contractural arachnodactyly
- Distal cholangiocarcinoma, see Cholangiocarcinoma
- Distal deletion 10q, see 10q26 deletion syndrome
- Distal hereditary motor neuronopathy type 5, see Distal hereditary motor neuropathy, type V
- Distal hereditary motor neuronopathy type VI, see Spinal muscular atrophy with respiratory distress type 1
- Distal hereditary motor neuronopathy, type II, see Distal hereditary motor neuropathy, type II
- Distal hereditary motor neuronopathy, type V, see Distal hereditary motor neuropathy, type V
- Distal hereditary motor neuropathy, type II
- Distal hereditary motor neuropathy, type V
- Distal median nerve compression, see Carpal tunnel syndrome
- Distal median nerve entrapment, see Carpal tunnel syndrome
- Distal monosomy 10q, see 10q26 deletion syndrome
- Distal monosomy 1p36, see 1p36 deletion syndrome
- Distal muscular dystrophy, Miyoshi type, see Miyoshi myopathy
- Distal myopathy 1, see Laing distal myopathy
- Distal myopathy 2
- Distal myopathy with or without rimmed vacuoles, see GNE myopathy
- Distal myopathy with rimmed vacuoles, see GNE myopathy
- Distal myopathy with vocal cord and pharyngeal signs, see Distal myopathy 2
- Distal myopathy with vocal cord weakness, see Distal myopathy 2
- Distal myopathy, Nonaka type, see GNE myopathy
- Distal myopathy, Tateyama type, see CAV3-related distal myopathy
- Distal spinal muscular atrophy type 1, see Spinal muscular atrophy with respiratory distress type 1
- Distal spinal muscular atrophy, type V, see Distal hereditary motor neuropathy, type V
- Distal X-linked AMC, see X-linked infantile spinal muscular atrophy
- Distichiasis-lymphedema syndrome, see Lymphedema-distichiasis syndrome
- DITRA, see Generalized pustular psoriasis
- DJS, see Dubin-Johnson syndrome
- DK1 deficiency, see DOLK-congenital disorder of glycosylation
- DLB, see Dementia with Lewy bodies
- DLD deficiency, see Dihydrolipoamide dehydrogenase deficiency
- DLG4-related synaptopathy
- DMD-associated dilated cardiomyopathy, see X-linked dilated cardiomyopathy
- DMD-related dilated cardiomyopathy, see X-linked dilated cardiomyopathy
- DMRV, see GNE myopathy
- DNAJC19 defect, see Barth syndrome
- DNAJC19 defect, see Dilated cardiomyopathy with ataxia syndrome
- DNMT1-complex disorder, see Hereditary sensory and autonomic neuropathy type IE
- DNMT1-related dementia, deafness, and sensory neuropathy, see Hereditary sensory and autonomic neuropathy type IE
- DNMT3A overgrowth syndrome
- DOA, see Optic atrophy type 1
- DOCK8 deficiency, see DOCK8 immunodeficiency syndrome
- DOCK8 immunodeficiency syndrome
- Dolichol kinase deficiency, see DOLK-congenital disorder of glycosylation
- Dolichospondylic dysplasia, see 3-M syndrome
- DOLK-CDG, see DOLK-congenital disorder of glycosylation
- DOLK-congenital disorder of glycosylation
- Dominant optic atrophy, see Optic atrophy type 1
- Donnai-Barrow syndrome
- Donohue syndrome
- Donohue's syndrome, see Donohue syndrome
- DOOR syndrome, see DOORS syndrome
- DOORS syndrome
- Dopa decarboxylase deficiency, see Aromatic l-amino acid decarboxylase deficiency
- Dopa-responsive dystonia
- Dopa-responsive dystonia due to sepiapterin reductase deficiency, see Sepiapterin reductase deficiency
- Dopamine beta-hydroxylase deficiency
- Dopamine transporter deficiency syndrome
- Dopamine β-hydroxylase deficiency, see Dopamine beta-hydroxylase deficiency
- Dorfman-Chanarin disease, see Chanarin-Dorfman syndrome
- Dorfman-Chanarin syndrome, see Chanarin-Dorfman syndrome
- Double cortex syndrome, see Subcortical band heterotopia
- Dowling-Degos disease
- Dowling-Degos-Kitamura disease, see Dowling-Degos disease
- Down syndrome
- Down's syndrome, see Down syndrome
- DPD deficiency, see Dihydropyrimidine dehydrogenase deficiency
- DPH deficiency, see Dihydropyrimidinase deficiency
- DPR, see Naegeli-Franceschetti-Jadassohn syndrome/dermatopathia pigmentosa reticularis
- DPYS deficiency, see Dihydropyrimidinase deficiency
- Drash syndrome, see Denys-Drash syndrome
- DRC syndrome, see DOORS syndrome
- DRD, see Dopa-responsive dystonia
- DRPLA, see Dentatorubral-pallidoluysian atrophy
- DRRS, see Duane-radial ray syndrome
- Drug-induced Stevens Johnson syndrome, see Stevens-Johnson syndrome/toxic epidermal necrolysis
- DSMA1, see Spinal muscular atrophy with respiratory distress type 1
- DSMAV, see Distal hereditary motor neuropathy, type V
- DTD, see Diastrophic dysplasia
- DTDS, see Dopamine transporter deficiency syndrome
- DTM1, see CHMP2B-related frontotemporal dementia
- Duane anomaly, isolated, see Isolated Duane retraction syndrome
- Duane retraction syndrome, see Isolated Duane retraction syndrome
- Duane syndrome, see Isolated Duane retraction syndrome
- Duane's syndrome, see Isolated Duane retraction syndrome
- Duane-radial ray syndrome
- Dubin-Johnson syndrome
- Dubin-Sprinz syndrome, see Dubin-Johnson syndrome
- Duchenne and Becker muscular dystrophy
- Duchenne/Becker muscular dystrophy, see Duchenne and Becker muscular dystrophy
- Duncan disease, see X-linked lymphoproliferative disease
- Dunnigan-Kobberling syndrome, see Familial partial lipodystrophy
- Dup(17)(p11.2p11.2), see Potocki-Lupski syndrome
- Dup(7)(q11.23), see 7q11.23 duplication syndrome
- Dup15q syndrome, see 15q11-q13 duplication syndrome
- Duplication 17p11.2 syndrome, see Potocki-Lupski syndrome
- Duplication/inversion 15q11, see 15q11-q13 duplication syndrome
- Dupuytren contracture
- Dupuytren disease, see Dupuytren contracture
- Dupuytren's contracture, see Dupuytren contracture
- Dwarf, achondroplastic, see Achondroplasia
- Dwarf, thanatophoric, see Thanatophoric dysplasia
- Dwarfism, growth hormone deficiency, see Isolated growth hormone deficiency
- Dwarfism, pituitary, see Isolated growth hormone deficiency
- Dwarfism-onychodysplasia, see Coffin-Siris syndrome
- Dwarfism-retinal atrophy-deafness syndrome, see Cockayne syndrome
- DWM, see Dandy-Walker malformation
- DWS, see Dandy-Walker malformation
- Dyschondroplasia, see Ollier disease
- Dyschondroplasia and cavernous hemangioma, see Maffucci syndrome
- Dyschondrosteosis, see Léri-Weill dyschondrosteosis
- Dyschondrosteosis homozygous, see Langer mesomelic dysplasia
- Dysencephalia splanchnocystica, see Meckel syndrome
- Dysequilibrium syndrome-VLDLR, see VLDLR-associated cerebellar hypoplasia
- Dyserythropoietic anemia and thrombocytopenia
- Dyserythropoietic anemia with thrombocytopenia, see Dyserythropoietic anemia and thrombocytopenia
- Dysgenesis neuroepithelialis retinae, see Leber congenital amaurosis
- Dysgnathia complex, see Auriculo-condylar syndrome
- Dyskeratosis congenita
- Dyslipoproteinemic corneal dystrophy, see Fish-eye disease
- Dysmyelinating leukodystrophy and spastic paraparesis, see Fatty acid hydroxylase-associated neurodegeneration
- Dysmyelinogenic leukodystrophy, see Alexander disease
- Dysostosis craniofacialis with hypertelorism, see Saethre-Chotzen syndrome
- Dysplasia linguofacialis, see Oral-facial-digital syndrome
- Dysprothrombinemia, see Prothrombin deficiency
- Dystonia 10, see Familial paroxysmal kinesigenic dyskinesia
- Dystonia 11, see Myoclonus-dystonia
- Dystonia 12, see Rapid-onset dystonia parkinsonism
- Dystonia 16
- Dystonia 3, torsion, X-linked, see X-linked dystonia-parkinsonism
- Dystonia 5, dopa-responsive type, see Dopa-responsive dystonia
- Dystonia 6
- Dystonia musculorum deformans, see X-linked dystonia-parkinsonism
- Dystonia musculorum deformans 1, see Early-onset isolated dystonia
- Dystonia-parkinsonism, X-linked, see X-linked dystonia-parkinsonism
- Dystrophia brevicollis congenita, see Klippel-Feil syndrome
- Dystrophia corneae parenchymatosa congenita, see Congenital stromal corneal dystrophy
- Dystrophia myotonica, see Myotonic dystrophy
- Dystrophic epidermolysis bullosa
- Dystrophy, oculopharyngeal muscular, see Oculopharyngeal muscular dystrophy
- DYT-PRKRA, see Dystonia 16
- DYT1, see Early-onset isolated dystonia
- DYT11, see Myoclonus-dystonia
- DYT12, see Rapid-onset dystonia parkinsonism
- DYT16, see Dystonia 16
- DYT3, see X-linked dystonia-parkinsonism
- DYT5b, see Tyrosine hydroxylase deficiency
- DYT6, see Dystonia 6
- DYT6 dystonia, see Dystonia 6