Illness or surgery: The stress from sickness or surgery may prompt the body to temporarily cease nonessential tasks such as hair production. Specific conditions can also trigger it, including thyroid disorders, syphilis, iron deficiency, lupus or severe infection. An autoimmune condition called alopecia areata, which has no cure, causes rapid body-wide hair loss.
See a doctor. While it may be easy to treat hair loss that's caused by stress or other physical or emotional shock, other types, especially those caused by medical conditions, require expert attention. Do not self-medicate. A medical test is necessary to determine the real cause of your hair loss. A medical diagnosis is important in order to rule out other factors that might be the cause of your hair loss. On the surface, it's easy to attribute hair loss to stress or the lack of sleep, but it is highly possible that the hair loss may be caused by an unknown or undetected condition related to hormones or genetics. With the right diagnosis, you'll be able to get the right medication and course of treatment.