Acute Generalized Alopecia

This is when a large amount of hair quickly falls out, following intense stress (divorce, psychological trauma, death, etc.). Pregnancy, surgery, systemic disease, chemotherapy etc. all cause hair to de-energize, and fall after three months, then may stop if the cause of the stress disappears.

Hair loss that occurs after giving birth (within six months after) is the same hair that would have been lost during pregnancy. This hair most likely only remained due to hormonal changes experienced during the pregnancy. This form of hair loss is considered normal and hair usually grows back fully within three to four months.

Besides cancer drugs that trigger a significant hair loss, those used against cholesterol, acne and hypertension can cause mild alopecia during the time the treatment lasts.