Severe cases of hair loss are often be referred to as alopecia. Hair loss can, however, happen for a number or reasons and vary in how much hair is lost or thinned.
Often hair loss is temporary but in some cases this can also be permanent. Hair loss or "baldness" can, particularly in men, be hereditary. It can however, be the result of hormonal changes, medical conditions or a persons normal process of ageing. While this more commonly effects men,
many women experience this. The average person can lose anywhere between 50-100 hairs per day. This usually isn't noticeable as new hair is growing in at the same time. It only becomes problematic when new hair doesn't replace the hair that has fallen out.
Hair loss is typically related to one or more of the following factors:
- Family history (heredity). The most common cause of hair loss is a hereditary condition that happens with aging.
- Hormonal changes and medical conditions. A variety of conditions can cause permanent or temporary hair loss, including hormonal changes due to pregnancy, childbirth, menopause and thyroid problems.
- Medications and supplements. Hair loss can be a side effect of certain drugs, such as those used for cancer, arthritis, depression, heart problems, gout and high blood pressure.
- Radiation therapy to the head. The hair may not grow back the same as it was before.
- A very stressful event. Many people experience a general thinning of hair several months after a physical or emotional shock. This type of hair loss is temporary.
- Hairstyles and treatments. Excessive hairstyling or hairstyles that pull your hair tight, such as pigtails or cornrows, can cause a type of hair loss called traction alopecia.