DISEASES OF THE HAIR & NAILS DERMATOLOGY DISEASES OF THE HAIR & NAILS

ANDROGENETIC ALOPECIA

ANDROGENETIC ALOPECIA Loss of hair in the frontotemporal and vertex areas. Typical male hair loss distribution.

ANDROGENETIC ALOPECIA                                                                 Male hair loss pattern

ANDROGENETIC ALOPECIA Hair transplantation

ANDROGENETIC ALOPECIA Diffuse thinning of hair on the crown, but also in the frontotemporal region of the scalp after treatment with androgens .

ANDROGENETIC ALOPECIA                                                                              Female hair loss pattern

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.

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.

ALOPECIA AREATA

ALOPECIA AREATA

ALOPECIA UNIVERSALIS This patient has lost all scalp hair, eyebrows, eyelashes, beard, and all body hair.

Anatomy of the Nail

NAIL SIGNS Nail clubbing Nail pitting Hutchinson’s sign - melanoma

Subungual hematoma

Ingrown toe nail

Ingrown toe nail

ONYCHOLYSIS Distal nail bed separated from the nail plate in 2 nails. The subungual space may be filled with hyperkeratotic debris

ONYCHOLYSIS

ONYCHOMYCOSIS Distal subungual hyperkeratosis and onycholysis involving most of the nail bed of the great toenails; these findings are usually associated with tinea pedis. DSO

ONYCHOMYCOSIS

ONYCHOMYCOSIS 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 . CANDIDA

PARONYCHIA The nail fold is erythematous, edematous, with early abscess formation, and is very painful.

PARONYCHIA

PARONYCHIA

PARONYCHIA

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.

FELON