Alopecia

Alopecia Nastaran tavakoli Guilan University of Medical sciences

Anatomy of Hair

Launugo
Vellus hair
Terminal hair

The life cycle of a hair is divided into three phases.
The actively growing (Anagen)phase
the transitional(Catagen) phase
the resting (Telogen) phase.

Hair Growth Cycle

Hair pull test

Trichogram

Anagen Catagen Telogen

A physiologic reaction
Genetic
DHEA-S
Norwood-Hamilton Classification
Family history: Commonly positive
Androgenic Alopecia in men (male pattern baldness)

Norwood-Hamilton Classification

Treatment
Minoxidil(Rogaine)
Finasteride(Propecia)
Autotransplantation of hair
flap surgery
Scalp extension and expansion

Androgenic Alopecia in Women (Female pattern hair loss)
Women with androgenetic alopecia do not have higher levels of circulating androgens.
Normal menses
Normal fertility
Diffuse central thinning
There is not usually any recession of the frontal hairline.

Associated findings: Signs or symptoms of hyperandrogenism should be looked for, ie, hirsutism,moderate to severe or treatment-refractory acne,irregular menses, infertility, and/or galactorrhea.Acanthosis nigricans is a marker for insulin resistance which is commonly associated with hyperandrogenism

If a woman has irregular menses, abrupt hair loss, hirsutism, or acne recurrence, an endocrine evaluation is appropriate.
In this situation, total testosterone, free testosterone, dehydroepiandrosterone sulfate,and prolactin levels should be obtained.

Check TSH and serum ferritin
Hypothyroidism
iron deficiency (serum ferritin or serum iron and TIBC)
telogen effluvium

Minoxidil
Finasteride?
Spironolactone (Aldactone)
Cyproterone Acetate with Ethinyloestradiol (Diane )
TREATMENT:

Traction alopecia
This condition is caused by localized trauma to the hair follicles from tight hairstyles that pull at hair over time.
If the condition is detected early enough, the hair will regrow.
Braiding, cornrows, tight ponytails, and extensions are the most common styling causes.

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Alopecia

by Nargess Tavakoli on Mar 17, 2009

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Alopecia — Presentation Transcript