1. DISEASES OF THE HAIR & NAILS
DERMATOLOGY
DISEASES OF THE HAIR & NAILS

2. ANDROGENETIC ALOPECIA

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

4. ANDROGENETIC ALOPECIA
                                                               
Male hair loss pattern

5. ANDROGENETIC ALOPECIA
Hair transplantation

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

7. ANDROGENETIC ALOPECIA
                                                                            
Female hair loss pattern

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.

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.

10. ALOPECIA AREATA

11. ALOPECIA AREATA

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

13. Anatomy of the Nail

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

15. Subungual hematoma

16. Ingrown toe nail

17. Ingrown toe nail

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

19. ONYCHOLYSIS

20. 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

21. ONYCHOMYCOSIS

22. 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

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

24. PARONYCHIA

25. PARONYCHIA

26. PARONYCHIA

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.

28. FELON