acne vulgaris is the most common disorder of sebaseous glandg affects male and female equally
sever forms more commone in male
usually begins after puberty and continue to half twenty
it is presented by polymorphic eruption of papule pustules and comedons and nodules on sebaseous gland rich skin as in face chest bake and upper arms
caused by genetic susciptability, hormonal factor and stress
pathogenesis include excess sebum secretion, ductal hypercornification, propionibacterium acne activity and inflamation
treatent includes topical and systemic agents
as antibiotics retenoids, benzoil peroxide, azali acids, anti androgen
laser treatment is help in post acne scars also peeling and microderm abrasion