Erythematous rash: Difference between revisions
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==Background== | ==Background== | ||
*These rashes can occur in a variety of inflammatory and infectious conditions, some of which can be rapidly fatal | |||
{{Rash red flags}} | |||
==Clinical Features== | ==Clinical Features== | ||
*Characterized by diffuse red skin from capillary congestion, mimicking a bad sunburn. | |||
{{Erythematous rashes images}} | |||
==Differential Diagnosis== | ==Differential Diagnosis== | ||
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==Evaluation== | ==Evaluation== | ||
===Workup=== | |||
===Diagnosis=== | |||
*First, try applying lateral pressure to the skin and see if it sloughs ([[Nikolsky’s sign]]) | |||
*Then, to further narrow the differential, consider wither or not the patient is febrile or toxic in appearance | |||
**Patients with an erythematous rash plus fever are also at high risk for having a deadly diagnosis | |||
==Management== | ==Management== | ||
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==References== | ==References== | ||
<references/> | <references/> | ||
[[Category:Dermatology]] |
Latest revision as of 19:07, 17 May 2023
Background
- These rashes can occur in a variety of inflammatory and infectious conditions, some of which can be rapidly fatal
Rash Red Flags[1]
- Fever
- Toxic appearance
- Hypotension
- Mucosal lesions
- Severe pain
- Very old or young age
- Immunosuppressed
- New medication
Clinical Features
- Characterized by diffuse red skin from capillary congestion, mimicking a bad sunburn.
Erythematous rash
Differential Diagnosis
Erythematous rash
- Positive Nikolsky’s sign
- Febrile
- Staphylococcal scalded skin syndrome (children)
- Toxic epidermal necrolysis/SJS (adults)
- Afebrile
- Febrile
- Negative Nikolsky’s sign
- Febrile
- Afebrile
Evaluation
Workup
Diagnosis
- First, try applying lateral pressure to the skin and see if it sloughs (Nikolsky’s sign)
- Then, to further narrow the differential, consider wither or not the patient is febrile or toxic in appearance
- Patients with an erythematous rash plus fever are also at high risk for having a deadly diagnosis
Management
Disposition
See Also
External Links
References
- ↑ Nguyen T and Freedman J. Dermatologic Emergencies: Diagnosing and Managing Life-Threatening Rashes. Emergency Medicine Practice. September 2002 volume 4 no 9.