Cortisone Injection (Corticosteroid Injection)Read about cortisone injection treatment for inflammation, allergic reaction, sciatica and arthritis. Learn about side effects and complications of a cortisone shot.Steroid Injections and ArthritisA look at the role that steroid injections play in managing arthritis and other problems.Patient Discussions: Cortisone Injection - Side effects - Viewers ...I had a cortisone injection in my left knee do to arthritis 3 days ago. The first night I had a bad headache, and most of the next day too. The second day I had hand ...