Triamcinolone is a steroid that prevents the release of substances in the body that cause inflammation. Triamcinolone injection is used to treat many different types of inflammatory conditions, including severe allergic reactions, severe colitis, blood cell disorders, inflammatory eye disorders, lung disorders, acute gouty arthritis, rheumatic arthritis, and problems caused by low adrenal gland hormones. Triamcinolone injection is also used to treat inflammation of the joints or tendons to treat arthritis, bursitis, or epicondylitis (tennis elbow). It is usually given in these conditions only as a short-term treatment of a severe or aggravated episode. Triamcinolone is also used to treat certain skin disorders caused by autoimmune conditions such as lupus, psoriasis, lichen planus, and others.