Dandy Walker Syndrome@
Deafblindness@
Deafness@
Deep Vein Thrombosis@
Degos Disease@
Delirium@
Dementia@
Dengue Fever@
Depersonalization Disorder@
Depression@
Dercum's Disease@
Dercum Disease@
Dermatitis Herpetiformis@
DES Syndrome@

Detached Retina@
Developmental Delay@
De Lange Syndrome@
Diabetes@
Diabetes Insipidus@
Diabetic Neuropathies@
Diabetic Retinopathy@
Diarrhoea@
DiGeorge Sequence@
DiGeorge Syndrome@
Digestive Disorders@
Dimitri Disease@
Diphtheria@
Dissociative Identity Disorder@

Diverticulitis@
Down Syndrome@
Drooling@
Dry Eye@
Duane Retraction Syndrome@
Dubowitz Syndrome@
Dwarfism@
Dysencephalia Splanchnocystica@
Dyslexia-Dysgraphia-Dyscalculia@
Dysmenorrhea@
Dyspareunia@
Dysphagia@
Dystonia@
Dystonia Musculorum Deformans@