dermatology diseases of the hair & nails. androgenetic alopecia

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  • Slide 1
  • DERMATOLOGY DISEASES OF THE HAIR & NAILS
  • Slide 2
  • ANDROGENETIC ALOPECIA
  • Slide 3
  • Loss of hair in the frontotemporal and vertex areas. Typical male hair loss distribution.
  • Slide 4
  • ANDROGENETIC ALOPECIA Male hair loss pattern
  • Slide 5
  • ANDROGENETIC ALOPECIA Hair transplantation
  • Slide 6
  • ANDROGENETIC ALOPECIA Diffuse thinning of hair on the crown, but also in the frontotemporal region of the scalp after treatment with androgens.
  • Slide 7
  • ANDROGENETIC ALOPECIA Female hair loss pattern
  • Slide 8
  • ALOPECIA AREATA Sharply outlined portion of scalp with complete alopecia without scaling, erythema or scarring. Short, broken-off hair shafts (exclamation point hair) appear as short stubs emerging from the bald scalp.
  • Slide 9
  • ALOPECIA AREATA Multiple, confluent, involved sites on the scalp with "exclamation point hairs" and evidence of regrowth in areas. Newly regrowing hairs may be fine and gray- white in color.
  • Slide 10
  • ALOPECIA AREATA
  • Slide 11
  • Slide 12
  • ALOPECIA UNIVERSALIS This patient has lost all scalp hair, eyebrows, eyelashes, beard, and all body hair.
  • Slide 13
  • Anatomy of the Nail
  • Slide 14
  • NAIL SIGNS Nail pitting Hutchinson s sign - melanoma Nail clubbing
  • Slide 15
  • Subungual hematoma
  • Slide 16
  • Ingrown toe nail
  • Slide 17
  • Slide 18
  • ONYCHOLYSIS The subungual space may be filled with hyperkeratotic debris Distal nail bed separated from the nail plate in 2 nails.
  • Slide 19
  • ONYCHOLYSIS
  • Slide 20
  • ONYCHOMYCOSIS DSO Distal subungual hyperkeratosis and onycholysis involving most of the nail bed of the great toenails; these findings are usually associated with tinea pedis.
  • Slide 21
  • ONYCHOMYCOSIS
  • Slide 22
  • CANDIDA The entire fingernail plate is thickened and dystrophic and is associated with a paronychia infection; both findings were caused by Candida. in a patient with advanced HIV disease.
  • Slide 23
  • PARONYCHIA The nail fold is erythematous, edematous, with early abscess formation, and is very painful.
  • Slide 24
  • PARONYCHIA
  • Slide 25
  • Slide 26
  • Slide 27
  • FELON A puncture wound of the fingertip resulted in formation of a pyogenic granuloma and Staphylococcus aureus infection of the subcutaneous tissue of the distal phalanx; early abscess formation.
  • Slide 28
  • FELON