This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
Itching associated with linear IgA deposition in dermal papillae is a feature of: 
Select and explain. 
A. Bullous disease of childhood, B. Lichenoid bullous disease, C. Dermatitis herpetiformis, D. Pemphigus vulgaris
C: Dermatitis herpetiformis
Answer: C: Dermatitis herpetiformis 
Explanation: The cutaneous lesions of Dermatitis herpetiformis (DH) in childhood resemble those in adult and are severely pruritic papulovesicles. DH is associated with granular deposition of IgA antibody within the dermal papillae. Ref: Cambridge Textbook of Accident and Emergency Medicine edited by David V. Skinner, Andrew Swain, Colin Robeson, J. W. Rodney Peyton, 1997, Page 1051