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rash
A skin eruption with inflammation, may be used in reference to dermatitis.
Etiology:
- skin infection
- scabies
- exanthem
- drug eruption
- also see dermatitis
- also see differential diagnosis of skin lesions by body region
Clinical manifestations:
1) characterize the skin lesions of the rash
a) erythema
b) papules
c) nodules
d) macules
e) bullae
f) vesicular lesions
h) wheals
2) characterize the distribution of the rash
3) associated pruritus ?
4) associated fever ?
5) worse at night ?
Laboratory:
- microscopic examination of skin scraping
- use mineral oil if scabies suspected
- use 20% KOH if fungus suspected [1]
- microscopic examination prior to discontinuation of drug if infection/infestation suspected
- other labs dependent upon suspected etiology
Related
bulla; bleb
erythema
macule
nodule
papule
pruritus (itching)
vesicular lesion; blister
wheal; welt
Specific
dermatitis
drug eruption; drug rash
exanthem
fever & rash
heliotrope rash; heliotrope suffusion of eyelids
malar rash (butterfly rash)
periorbital violaceous rash
reticular rash
shawl sign
V sign
volar rash; palmar rash
General
sign/symptom
inflammation
skin disease (dermatologic disorder, dermatopathy, dermatosis)
References
- Geriatric Review Syllabus, 8th edition (GRS8)
Durso SC and Sullivan GN (eds)
American Geriatrics Society, 2013
- Unizony SH, Kim ND, Hoang MP.
Case Records of the Mass General Hospital. Case 7-2015:
A 25-year-old man with oral ulcers, rash, and odynophagia.
N Engl J Med. 2015 Feb 26;372(9):864-72
PMID: 25714165
http://www.nejm.org/doi/full/10.1056/NEJMcpc1413303