Fordyce spots are?
Fordyce's spots are ectopic sebaceous glands which appear as whitish-yellow bumps on the edge of your lips (most common) / inside your cheeks/penis/scrotum/labia DD of Koplik's spots (pathognomonic of measles) Miliaria occurs due to obstruction of eccrine sweat glands. Fox Fordyce disease occurs due to obstruction of apocrine glands.
Ectopic sebaceous glands
Ectopic eccrine
Ectopic apocrine
Ectopic mucosal glands
Disorders of sebaceous and sweat glands