Alopecia

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Alopecia

  1. 1. Alopecia Nastaran tavakoli Guilan University of Medical sciences
  2. 2. Anatomy of Hair
  3. 4. <ul><li>Launugo </li></ul><ul><li>Vellus hair </li></ul><ul><li>Terminal hair </li></ul>
  4. 5. <ul><li>The life cycle of a hair is divided into three phases. </li></ul><ul><li>The actively growing (Anagen)phase </li></ul><ul><li>the transitional(Catagen) phase </li></ul><ul><li>the resting (Telogen) phase. </li></ul>
  5. 6. Hair Growth Cycle
  6. 7. Hair pull test
  7. 8. Trichogram
  8. 9. Anagen Catagen Telogen
  9. 10. <ul><li>A physiologic reaction </li></ul><ul><li>Genetic </li></ul><ul><li>DHEA-S </li></ul><ul><li>Norwood-Hamilton Classification </li></ul><ul><li>Family history: Commonly positive </li></ul>Androgenic Alopecia in men (male pattern baldness)
  10. 11. Norwood-Hamilton Classification
  11. 14. Treatment <ul><li>Minoxidil(Rogaine) </li></ul><ul><li>Finasteride(Propecia) </li></ul><ul><li>Autotransplantation of hair </li></ul><ul><li>flap surgery </li></ul><ul><li>Scalp extension and expansion </li></ul>
  12. 15. Androgenic Alopecia in Women (Female pattern hair loss) <ul><li>Women with androgenetic alopecia do not have higher levels of circulating androgens. </li></ul><ul><li>Normal menses </li></ul><ul><li>Normal fertility </li></ul><ul><li>Diffuse central thinning </li></ul><ul><li>There is not usually any recession of the frontal hairline. </li></ul>
  13. 16. <ul><li>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 </li></ul>
  14. 17. <ul><li>If a woman has irregular menses, abrupt hair loss, hirsutism, or acne recurrence, an endocrine evaluation is appropriate. </li></ul><ul><li>In this situation, total testosterone, free testosterone, dehydroepiandrosterone sulfate,and prolactin levels should be obtained. </li></ul>
  15. 18. <ul><li>Check TSH and serum ferritin </li></ul><ul><li>Hypothyroidism </li></ul><ul><li>iron deficiency (serum ferritin or serum iron and TIBC) </li></ul><ul><li>telogen effluvium </li></ul>
  16. 26. <ul><li>Minoxidil </li></ul><ul><li>Finasteride? </li></ul><ul><li>Spironolactone (Aldactone) </li></ul><ul><li>Cyproterone Acetate with Ethinyloestradiol (Diane ) </li></ul>TREATMENT:
  17. 27. Traction alopecia <ul><li>This condition is caused by localized trauma to the hair follicles from tight hairstyles that pull at hair over time. </li></ul><ul><li>If the condition is detected early enough, the hair will regrow. </li></ul><ul><li>Braiding, cornrows, tight ponytails, and extensions are the most common styling causes. </li></ul>

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