deep venous thrombosis

delirium

delusional infestation

dementia

dental hygiene

depression

depressive symptoms

developmental delay

diabetes

diabetes mellitus

diabetic cardiomyopathy

diabetic nephropathy

diabetic neuropathy

diarrheal diseases

diffuse large b cell lymphoma

digestive diseases

diphtheria

disability

disordered eating

diverticular disease

diverticulitis

diverticulosis

down syndrome

down's syndrome

dry eye disease

duchenne muscular dystrophy

ductal carcinoma

dyslexia