Alopecia Alopecia Nastaran tavakoli Nastaran tavakoli Guilan University of Medical sciences Guilan University of Medical sciences
AlopeciaAlopecia
Nastaran tavakoliNastaran tavakoliGuilan University of Medical sciencesGuilan University of Medical sciences
Anatomy of HairAnatomy 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 CycleHair Growth Cycle
Hair pull testHair pull test
TrichogramTrichogram
Anagen Catagen
Telogen
• A physiologic reaction• Genetic• DHEA-S• Norwood-Hamilton Classification• Family history: Commonly positive
Androgenic Alopecia in menAndrogenic Alopecia in men(male pattern baldness)(male pattern baldness)
Norwood-Hamilton Norwood-Hamilton ClassificationClassification
TreatmentTreatment
• Minoxidil(Rogaine)• Finasteride(Propecia)• Autotransplantation of hair• flap surgery• Scalp extension and expansion
Androgenic Alopecia in WomenAndrogenic Alopecia in Women(Female pattern hair loss)(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 alopeciaTraction 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.