From few days Daily at night I am having back headache and feel like pressure around the eyes or like dry eyes around them and it seems like very bad to me. Even i can't concentrate on anything and even when i stand up i feel like i don't have any control on my body i feel very weak. I feel tremors inside my body. I had ett and echo done it's perfectly fine because from last year i had an anxiety. But I don't know why the headache get started now. Please advise.