Acne does not touch only tennagers, in fact it can touche anyone from newborns to adults. Different types of acne can appear in different stage of your life. Acne vulagaris can have different symptoms: comedones, blackheads, whiteheads, papules, pustules, nodules or cysts.
The main cause of acne is hormones, so an endogenous cause, but there are also different exogenous factors that can cause and exacerbate acne. Acne is sometimes referred to by age and grouped together according to these exogenous factors.