UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 0002

A 55 year old complains of a scaly and reddened rash on his skin. He noticed that this usually occurs after exposure to sunlight. He admits to recent weakness, diarrhea and weight loss. Examination is unremarkable except for a slight tremor

Correct Answer: D Explanation: These features are typical of pellagra which is a clinical deficiency syndrome resulting in dermatitis, diarrhea, dementia and inflammation of the mucus membranes. Skin lesions typically appear in area exposed to light or trauma.
Mental symptoms may include depression, irritability, anxiety, confusion, disorientation, delusions and hallucinations.
Pellagra is caused by an inadequate diet and a deficiency of nicotinic acid.
It is still seen occasionally with alcoholism, poor dietary intake in the elderly, and malabsorption

Related Questions