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 AREATASharply 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 pitting Hutchinson’s sign - melanoma

Nail clubbing

Subungual hematoma

Ingrown toe nail

Ingrown toe nail

ONYCHOLYSIS

The subungual space may be filled with hyperkeratotic debris

Distal nail bed separated from the nail plate in 2 nails.

ONYCHOLYSIS

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.

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 .

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