"Fitzpatrick's Color Atlas & Synopsis of Clinical Dermatology"; Klaus
Wolff, Richard Allen Johnson, Dick Suurmond; Copyright 2005, 2001, 1997, 1993
by The McGraw-Hill Companies. All Rights reserved.
Telogen effluvium (TE) is probably the second most common form of hair loss
dermatologists see. It is a poorly defined condition; very little research has
been done to understand TE. In essence though, TE happens when there is a
change in the number of hair follicles growing hair. If the number of hair
follicles producing hair drops significantly for any reason during the resting,
or telogen phase, there will be a significant increase in dormant, telogen
stage hair follicles. The result is shedding, or TE hair loss.
Read more about hair loss basics.