I have a torn meniscus , and arthritis in my knee so I had a cortisone injection yesterday, the 27 of July. The injection site was sore, but not anything I couldn't handle. I did however have a headache all night, couldn't sleep, and my blood pressure was high. I take medicines for high blood pressure , but it didn't help much. I felt achy all over, and had hot flashes so bad that I had to have a fan blowing directly on me all night. Today I feel somewhat better. Knee isn't as sore, blood pressure is ok, and I am not as hot as I was last night. I did take a nap today, and felt like eating. Headache is slight, and less pain in my knee. Not sure if I will have another shot or not because of the side effects, but depends on how much I can endure with the pain in my knee.