Lump post injection

Currently on Rebif (Interferon beta 1a) with autoinjector for a year. There's a round lump on 1 side of the tummy & one small area with hardening sensation upon pressing down. It hurts on & off. Already tried massaging after the injection as advised by the nurse. Trying to analyze & wonder if the medicine had been absorbed by the body or already hardened & become the lump. Trying to ignore the lump but subconsciously, know that it's still present.

[Dr. Kokil Mathur]

Hi!
First of all let me assure you that the medication would have got absorbed, even though at a slower rate. Before self-administering a Rebif injection, apply a warm cloth to the injection site for a few minutes (2-3 minutes). This will open up the blood channels for better absorption. After administering the injection, gently massage the site with circular motion. Use a site with good fat mass under the skin such as your thigh, stomach, buttocks, and outer surface of upper arm. Since you have developed a lump at this site, start injecting at a new site.   You can apply corticosteroid or aloe vera cream in the lump after discussing with your doctor.Take care!