Fox Fordyce's disease is a disease of –: (A) Eccrine glands, (B) Apocrine glands, (C) Sebaceous glands, (D) Pilosebaceous glands
Answer is B. Diseases of Sweat glands

Eccrine glands         →         Hyperhydrosis, Anhydrosis, Miliaria.
Apocrine glands       →         Chromhidrosis (coloured sweat), Osmidrosis (offensive sweat odour), Bromhidrosis (hyperhidrosis + offensive odour), Fox - Fordyce's disease (apocrine miliaria), hidradenitis suppurativa.