What causes steroid acne?

Corticosteroids reduce inflammation, but they can also change the local environment around hair follicles. Follicles may become blocked more easily, and the normal balance of skin microbes and immune responses can shift. The eruption often consists of similar-looking red bumps or pus-filled spots rather than a mixture of blackheads, whiteheads, and larger deep pimples. It may affect the face, chest, back, shoulders, or areas repeatedly exposed to a steroid product.

The timing and appearance can help a clinician distinguish steroid acne from ordinary acne, folliculitis, or another rash. The term can describe an eruption after a topical product, while steroids taken by mouth or given in another form may also affect skin.

Do not stop a prescribed steroid abruptly without discussing it with the prescriber, particularly if it treats a significant inflammatory condition. Contact the clinician who recommended it and explain when the bumps appeared, where the product was used, and whether the eruption is itchy, tender, or draining.

Use gentle cleansing, avoid scrubs and picking, and choose non-comedogenic moisturiser or sunscreen when needed. A dermatologist may recommend changing the steroid plan or adding acne-directed treatment after confirming the diagnosis. Keep a list of all creams, tablets, inhalers, or injections because exposure from more than one source can matter.

Seek prompt advice if the eruption is rapidly spreading, painful, associated with fever, or leaving deep tender lumps or scars. Urgent help is needed for facial swelling, trouble breathing, blistering, peeling skin, or sores involving the eyes or mouth, as these features may indicate a serious reaction rather than straightforward steroid acne.

Could this be steroid acne, folliculitis, or another eruption? Should I change how I use the steroid? Are any of my other medicines contributing? What treatment is suitable for the affected body area?