This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vestibulobullous disorders, Subject name: Dental
Gluten free diet is beneficial in - 
Select and explain. 
A. Psoriasis, B. Exfoliative dermatitis, C. Dermatitis herpetiformis, D. Pemphigoid
C: Dermatitis herpetiformis
Answer: C: Dermatitis herpetiformis 
Explanation: <p>DERMATITIS HERPETIFORMIS Chronic intensely pruritic vesiculobullous disorder. Site- extremities and trunk Clinical features:- Intense episodic pruritus. Skin lesions- erythematous papules which rapidly turn into tiny firm grouped vesicles Vesicle rupture and crusted excoriated lesions seen. Disease worsens on dietary intake of gluten namely wheat barley and rye. Gluten sensitive enteropathy occurs in almost DH Cases. Usually it is asymptomatic, some show symptoms of malabsorption. So Gluten free diet is essential for DH Patients. {Reference: IADVL textbook of dermatology, vishalakshi Vishwanath pg no.285}</p>