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A member asked:
How fast does a cortisone injection work on a rash from allergic reaction?
17 doctors weighed in across 2 answers
Slight delay: Cortisone is in the class of steroids and while they are very quickly absorbed, the good effect can take 12 to 24 hours to notice. The peak effect may take a few days even. In general steroid injections have been replaced by short or intermediate duration steroids to maintain the effectiveness and decrease the risks. The first goal is to identify the reason for the rash.
Answered 8/16/2018
5.4k views
Cortisone: Cortisone injections work quickly after injected. Most people find early relief 24 - 72 hours after injected, depending on the dose and the severity of the problem.
Answered 6/29/2018
5.3k views
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