What is the typical age of onset for male pattern baldness?
Hair loss
Treatment of pattern hair loss may simply involve accepting the condition.[3] Interventions that can be tried include the medications minoxidil (or finasteride) and hair transplant surgery.[4][5] Alopecia areata may be treated by steroid injections in the affected area, but these need to be frequently repeated to be effective.[3] Hair loss is a common problem.[3] Pattern hair loss by age 50 affects about half of males and a quarter of females.[3] About 2% of people develop alopecia areata at some point in time.[3]
Rumination syndrome
The occurrence of rumination syndrome within the general population has not been defined. Rumination is sometimes described as rare, but has also been described as not rare, but rather rarely recognized.
The disorder has a female predominance. The typical age of adolescent onset is 12.9, give or take 0.4 years (±), with males affected sooner than females (11.0 ± 0.8 for males versus 13.8 ± 0.5 for females).