This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Eczema and related disorders, Subject name: Dental
Exposure to sunlight aggravates all except: 
Select and explain. 
A. Pellagra, B. Atopic eczema, C. Psoriasis, D. Hidradenitis suppurativa
D: Hidradenitis suppurativa
Answer: D: Hidradenitis suppurativa 
Explanation: Although sunlight is generally beneficial, psoriasis may be provoked by sunlight in a minority.Some photoaggravated conditions that are generally phototherapy responsive, including psoriasis and eczema, may be successfully treated by cautious use of UVB phototherapy or PUVA. Dermatosis not caused but aggravated by ultraviolet exposure. Acne Atopic eczema Cutaneous T-cell lymphoma Dermatomyositis Erythema multiforme Familial benign chronic pemphigus (Hailey-Hailey disease) Granuloma annulare Hanup syndrome Keratosis follicularis (Darier's disease) Lichen planus Lupus erythematous Pellagra Pemphigus Psoriasis Reticular erythematous mucinosis (REM) syndrome Seborrhoeic eczema