Yesterday morning I had a corticosteroid injection in my right knee for a patellar tendinitis. No reactions yesterday except a slight headache. Today however, I ve been experiencing palpitations and slight headache. I took my blood pressure and it was completely normal at 120/68 and my pulse was 68. The palps began after exercising for 1/2 hour on my treadmill this afternoon at 3pm and haven t completely subsided yet, it s now 9:30. Will these symptoms disappear eventually?

Summarized question: Does corticosteroid injections causes headache?