Why do some people have really serious acne problems while others are barely touched?

Generics, hormones: Two.Contributory factors are geneticsfamilttebdeboces and elevated hormones.In women polycywtic ovaries can be associated with severe acne.

Causes of acne: Acne can be due to genetics, changes in hormones (during puberty, pregnancy, menopause), hormonal imbalance with too much of one hormone, stress, & diet related the japanese did not have alot of acne until fast food was introduced so diet is a huge new contributor to this problem. Cell phones & hats can cause frictional acne; so lots of reasons.