pellagra

Question 1

cause

Answer 1

nicotinic acid (niacin) deficiency

isoniazid therapy

Question 2

classical features 3 d’s

Answer 2

dermatitis, diarrhoea and dementia.

Question 3

who?

Answer 3

alcoholics

Question 4

features

Answer 4

dermatitis (brown scaly rash on sun-exposed sites - termed Casal’s necklace if around neck)
diarrhoea
dementia, depression
death if not treated