I am experiencing nausea (severity: severe), headache (occurred: 1 - 3 hours) (quality: dull or aching sensation, sensation of pressure or fullness) (side: front, left, right) (severity: moderate) (time frame: suddenly), shaking hands or tremor, hot fl

Please see your dr. Headaches are a very difficult symptom. Causes for headaches can be caused by many things. Poor eyesight, fever from something else, dehydration, sinusitis, cervical spine and shoulder spasm, high or low blood sugars, toothache, earache, trigeminal neuralgia, space occupying lesion etc.