This is a good question. It is important that you make an appointment with your primary care doctor
to discuss your symptoms and have a full history and physical. Depending on what your doctor discovers during your visit, he or she may order some blood test or refer you to a dermatologist
. There are many different causes of hair loss
. Sometimes hair loss is hereditary, meaning it runs in your family. So if your mom, sisters, aunts or grandma suffered from thinning hair than this might be your case. Sometimes thyroid issues can cause your hair to thin, so your doctor might order a blood test if you have any other signs or symptoms of thyroid disease. Hair loss can also be a sign of a hormonal problem, so your doctor might ask about your periods, etc. Hair loss is very common after the birth of a child. Sometimes, thinning hair is a sign of a dermatological problem such as alopecia. Again, it is important to make an appointment with your doctor so that you can get an appropriate diagnosis and obtain correct treatment. In the meantime, do not pull your hair back tightly as this can exacerbate the problem.