Good afternoon doctor, i have a question for hair loss, please give me advice, thanks.

Depends on cause...: One's primary care doctor can check for medical causes. If none are found, then one can see a dermatologist, especially one specializing in hair restoration (some treatments: minoxidil, etc...). Medical causes may include: hormonal problems (such as low thyroid), seborrhea, alopecia areata, stressful illness. Other causes: genetic male-female-pattern baldness, telogen effluvium.

Alopecia?: There is a condition called alopecia which causes the hair to fall out. This is different from male pattern baldness which is genetic and not a disorder. It can be in patches or the entire body. A dermatologist can tell you if you have alopecia (an autoimmune disorder) and treat it. Peace and good health.