Hello! I read your question carefully and understand your concern! I think that your symptoms are caused by chronic psychological stress. It seems to be a tension type headache associated with difficulty in concentration ( causing your troubles with memory) and anxiety ( the shaking hands). There is nothing you should worry about. Just relax! I would recommend you to have more physical activity. Yoga would be very helpful. I would also advise you to avoid caffeine and follow a healthy diet. If this doesn t help, an antidepressant like a SSRI-inhibitor would be the drug of choice to help you with your headache and your anxiety. Hope to have been helpful! Greetings! Dr. Aida