Sinusitis is a painful condition that affects the tissues in the lining of your sinus cavities. It can be very uncomfortable with symptoms of pressure, headaches, facial pain, and stuffiness. Steroid shots are used when home remedies and antibiotics do not work. They can quickly reduce severe inflammation to help your body heal and recover. The effects of one shot are "short-term" and side-effects minimal with only one injection. Read on to see when the doctor may use this treatment, side-effects to watch out for, and other home remedies that may bring you quick relief.