Dandruff
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Deep-vein thrombosis
Dehydration
Delirium
Delirium tremens
Dementia
Dental caries
Depression
Dermatitis
Dermatomyositis
Diabetes insipidus
Diabetes: Type 1
Diabetes: Type 2
Diabetic ketoacidosis
Dialysis
Diarrhoea
Dilated cardiomyopathy
Diphtheria
Diseases from cats
Diseases from dogs
Diverticulosis and diverticulitis
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Down’s syndrome
Drug allergy
Ductal carcinoma in situ
Dysmenorrhoea
Dystonias