Author: Hon A/Prof Amanda Oakley, Dermatologist, Hamilton, New Zealand, May 2016.
Fever most commonly indicates bacterial or viral infection. If there is no systemic sepsis, localised rashes associated with infection tend to cause fewer systemic symptoms than generalised rashes associated with infection. Mucosal involvement is common. There are some acute auto-inflammatory disorders than mimic infection due to neutrophil activation, the neutrophilic dermatoses.
Consider performing the following tests:
Treatment depends on the cause. Consider referral to emergency department if you are suspicious of serious infection or the patient is very unwell.
Painful red, hot skin
May involve mucosal surfaces
Widespread purple/black areas
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