I have severe cystic acne on my scalp, how common is that? I just started treatment with accutane for it, I am 62 years old.

Although safe to continue with contact sports while on Accutane, I always warn my patients that they may experience fatigue or joint and muscle aches while on Accutane, so they perform below their potential in competitive sports.

There is some evidence that very low doses of Accutane can still work for acne, but therapy duration would be much longer.

It sounds like you should have some blood tests to evaluate this excessive hair growth.  This could be a hormonal irregularity.  You may need to see an endocrinologist.