Powered by


                    Home  |  Forums  |  Humor  |  Advertising  |  Contact
   Ask a Doctor

   News via RSS







   Forum Archives





















   Primary Care






   Other Sections


   Research Tools

   Medical Tutorials

   Medical Software




Back to Dermatology Diseases


Baldness (synonym: Alopecia) is the state of lacking hair where it usually would grow, especially on the head.

The most common form of baldness seen is male pattern baldness, in which the hair recedes from the lateral sides of the forehead, known as "receding brow". Additionally, a bald patch can develop on top (vertex). The trigger for this type of baldness, which is also known as androgenetic alopecia, is currently believed to be an enzyme, 5-alpha reductase, that converts the hormone testosterone into dihydrotestosterone (DHT), which inhibits hair growth. The age at which the enzyme appears, if it does at all, is genetically determined. Male pattern baldness is being classified on the Hamilton-Norwood scale I-VIII.

Female pattern baldness, in which the midline parting of the hair appears broadened, is less common. It is believed to result from a decrease in estrogen, a hormone that normally counteracts the balding effect of testosterone, which normally occurs in women's blood. Female pattern baldness is being classified on the Ludwig scale I-III.

Hair loss is a frequent side-effect of chemotherapy, in all ages and both sexes. This is due to the fact the chemotherapy affects all rapidly replicating cells, including the ones in the hair follicle.

Some mycotic infections can cause massive hair loss.

Other forms of baldness:

Alopecia areata

advertisement.gif (61x7 -- 0 bytes)

Are you a doctor or a nurse?

Do you want to join the Doctors Lounge online medical community?

Participate in editorial activities (publish, peer review, edit) and give a helping hand to the largest online community of patients.

Click on the link below to see the requirements:

Doctors Lounge Membership Application

previous.gif (72x17 -- 347 bytes) next.gif (72x17 -- 277 bytes)



 advertisement.gif (61x7 -- 0 bytes)



We subscribe to the HONcode principles of the HON Foundation. Click to verify.
We subscribe to the HONcode principles. Verify here

Privacy Statement | Terms & Conditions | Editorial Board | About us
Copyright 2001-2012 DoctorsLounge. All rights reserved.