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axilla lesions, skin
Etiology:
1) macules
- ephelides (freckle -> brown)
- fixed drug eruption (reddish brown)
- intertrigo (erythematous)
- LEOPARD syndrome
- vitiligo (white)
- von Recklinghausen's neurofibromatosis
2) papules or plaques
- acanthosis nigricans (velvety, brown pigmented)
- acrochordon
- candidiasis
- contact eczematous dermatitis (deodorant, antiperspirant)
- pseudoxanthoma elasticum (chamois in color)
- psoriasis
- seborrheic dermatitis
- Tinea corporis (rare)
- erythrasma
- scabies (erythematous papules) [2]
3) nodules
- hydradenitis suppurativa
- scabies
4) scales
- candidiasis
- contact eczematous dermatitis
- psoriasis
- seborrheic dermatitis
- Tinea corporis (rare)
- erythrasma
5) lichenification
- lichen simplex chronicus
6) vesicles or bullae
- acute contact dermatitis
- bullous impetigo
- benign familial pemphigus
- pemphigus vulgaris
- scabies (anterior axillary fold)
7) pustules
- scabies [2]
8) erosions
- bullous pemphigoid
- benign familial pemphigus
- pemphigus vulgaris
Related
axilla
General
differential diagnosis of skin lesions by body region
References
- Color Atlas & Synopsis of Clinical Dermatology, Common
& Serious Diseases, 3rd ed, Fitzpatrick et al, McGraw Hill, NY,
1997, pg 994-1001
- Geriatric Review Syllabus, 11th edition (GRS11)
Harper GM, Lyons WL, Potter JF (eds)
American Geriatrics Society, 2022