BALDNESS is a layman term for a patch of hairlessness where Hair is normally present. It is also called Alopecia in medical texts. There are many types based on the causes, gender and distribution of baldness.
Most often it is Androgenic Alopecia meaning male pattern baldness > Alopecia areata, Alopecia areata totalis, Alopecia areata Universalis, > Trichotillomania, >Traction alopecia (caused by certain hairstyles) > Telogen Afluvium. GENDER: Male Pattern & Female Pattern but they may present in opposite gender too. AREA OF DISTRIBUTION(GRADES/DEGREE): 3 Grades in Female pattern and 7 Grades in Male pattern.