When should you stop injecting and see a clinician?

Stop and get in-person care if redness is spreading, red streaks run away from the spot, the area is warm, pain or swelling is getting worse instead of fading, there is pus or leaking, or you have a fever. Standard guidance on shots under the skin lists those as signs of a possible infection or abscess (a pocket of pus). They need a clinician, not a forum thread. A small bruise, mild redness that fades in a day, or a firm spot that softens over a few days is listed as an expected reaction on approved labels for injected medicines. This page is coach language, not a diagnosis. Full walkthrough at /injecting.

Full injecting guide: sites, needles, rotation, safety

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of injecting: sites, needles and safety. Subcutaneous vs intramuscular, site rotation, lipohypertrophy, needle length and gauge, vial hygiene at injection time, travel syringes, scar tissue, and when to stop and see a clinician. Full walkthrough at /injecting.