Types of alopecia. Childhood. Early puberty. Total baldness after age 40



Types of alopecia:
Type I: starts at an early age of 10 years and lasts for a long time, and total baldness occurs in the future by 75%.
- Type II: begins in late childhood and the beginning of adulthood and extends for less than 3 years, and total baldness occurs by 6%.
- Type III: begins in early adulthood, and one or both parents have high blood pressure, which is rapid and total baldness occurs by 39%.
- Type IV: begins after the age of forty and extends for a long time and total baldness occurs by 10%.