What does steroid injection into the skin treat?

A clinician may use an intralesional steroid such as triamcinolone to reduce inflammation inside a targeted lesion. It can be considered for some hypertrophic scars, inflamed skin cysts, granuloma annulare, hidradenitis suppurativa nodules, and inflammatory scalp conditions such as folliculitis decalvans or frontal fibrosing alopecia. The choice depends on the diagnosis, lesion thickness, location, and surrounding skin. It is not a universal treatment for every lump, rash, or scar, and it does not replace drainage or other care when a cyst is infected.

The clinician examines the lesion and selects a concentration and injection depth. Several small injections may be placed into a thickened area; the skin can feel sore afterward. Keep the site clean, avoid rubbing it, and follow the dressing instructions you receive. Discuss your history of skin thinning, pigment changes, infections, or reactions to steroid medicines before treatment. Further information is available about [Triamcinolone Acetonide](/materials/triamcinolone-acetonide/) and [Steroid Injection Into The Skin](/treatments/injectables/intralesional-steroid-injection/).

Contact the treating clinic if pain, swelling, warmth, drainage, or redness is increasing rather than easing. Prompt assessment is needed for fever, spreading redness, a rapidly enlarging lesion, or vision symptoms after an injection near the eye. A shallow depression, lightened patch, or visible small blood vessels at the site also deserves review.

Ask what diagnosis is being treated, why an injection is suitable, how many areas may be treated, and what changes to expect. Ask about alternatives, skin-colour changes, thinning, infection precautions, and when a follow-up examination is needed.