The second most common form it can affect anyone at any age. It is, in fact, a generic or umbrella term that covers a multitude of sins. Whenever the body is going through major changes, hormones can be generated which may lead to hair loss. Chemotherapy will be the most familiar, but these changes might be triggered by something as common as childbirth. Even fevers, or the sort of severe infections and illnesses that bring on a fever, can lead to increased hair loss.
The range of triggers is broad and the precise way they work, due to the complex biochemistry involved, a challenge. However, regardless of the trigger, Telogen presents in exactly the same way every time – An increase in the number of follicles stuck in the telogen phase, when the follicle is dormant or resting. This is a part of the process where understanding is becoming far more detailed and for which treatments are available.