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Why does facial flushing occur after a steroid injection?

Facial flushing after a steroid injection can occur due to several reasons related to the way steroids affect the body. Here’s why this happens:

1. Increased Blood Flow

Steroid injections, especially corticosteroids, can cause blood vessels to dilate, increasing blood flow to the skin. This vasodilation can lead to a temporary flush of redness in the face, which is most noticeable in the cheeks and forehead.

2. Hormonal Changes

Steroids affect the body’s hormonal balance, including cortisol levels. When injected, steroids can trigger the release of certain hormones that may cause skin reactions, such as redness or flushing. This is particularly common in people who are sensitive to hormonal shifts.

3. Side Effects of Steroid Use

Steroids, when injected, may lead to side effects such as fluid retention and changes in skin tone. In some individuals, these side effects can result in a flushed appearance due to swelling and altered blood flow in the facial area.

4. Immune System Response

Steroid injections often suppress the immune system as part of their therapeutic action. This suppression can cause mild inflammatory responses, which may trigger facial redness or flushing as part of the body’s reaction to the medication.

5. Adrenal Response

Steroids, particularly systemic steroids, can affect the adrenal glands, leading to changes in body temperature regulation. This can result in feelings of warmth and a flushed complexion.