<prompt> Fox Fordyces disease is a disease of -Eccrine sweat glandsApocrine sweat glandsSebaceous glandsPilosebaceous glands  <response>: Ans. is b i.e., Apocrine sweat glands Diseases of Sweat glands 1 Eccrine glands - Hyperhydrosis, Anhydrosis, 2 Apocrine glands - Chromhidrosis colored sweet, Osmidrosis offensive sweat odor, Bromhidrosis hyperhidrosis offensive odor, Fox - Fordyces disease apocrine miliaria, hidradenitis suppurativa. Diseases of sebaceous glands 1 Pilosebaceous glands - Acne vulgaris. Epidermoid sebaceous cyst. 2 Ectopic sebaceous glands - Fordyces spot, Montgomerys tubercle Note: Fordyces spot represents ectopic sebaceous glands on lips most common site and oral mucosa. They may also appear on vulva and penis, where they are called Tysons gland, i.e., an ectopic sebaceous gland at penis prepuce and vulva is called Tysons gland. o Thus Fox Fordyces spots: the disease of apocrine sweat glands wile fordyces spots: ectopic sebaceous glands. 