Other forms of hair loss, which make up the majority of cases, are not contagious. Treatment is directed at the underlying cause. Some people may choose hair grafting, or hair transplantation, to cover areas of hair loss. Wigs, hair weaves, toupees, and other hairpieces may be used to cover areas where hair is thin or absent. Other treatments may be used for other causes.
Some people choose no treatment at all.
All medications may cause side effects. For example, finasteride may cause erectile dysfunction in men. Antibiotics may cause rash , stomach upset, or allergic reactions . If treatment is successful, the hair loss stops. With male pattern baldness, treatment is often needed for life to prevent further hair loss.