Dermatoses Infectious dermatoses Non infectious dermatoses (non infectious dermatoses) Define acne vulgaris What is the cause of acne vulgaris Explain pathophysiology of acne vulgaris During puberty, the sebaceous glands are stimulated by androgen hormones.|The size of the sebaceous glands increases. Sebaceous glands produce natural oils and sebum.|In the condition of acne vulgaris, the sebaceous glands are stimulated by many factors.|This leads to increased sebum production. This sebum flow comes out