This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
Berloque dermatitis is due to contact with which of the following? 
Select and explain. 
A. Plants, B. Food, C. Cosmetics, D. Metal
B: Food
Answer: B: Food 
Explanation: Berloque dermatitis (or trinketdermatitis) is a special form of phytophotodermatitis caused by exposure to perfumes. These perfumes contain a high concentration of bergapten (5-methoxypsoralens). Berloque dermatitis is rare nowadays, but may arise if an older fragrance is applied to the skin. Ref ganong's review of medical physiology 25e p765