tension headache
Yes, low blood pressure may sometimes result in headache.
Low iron or swollen veins
Pressure on the foot is propably the answer because my feet used to be swollen from the pressure on my foot and my shoe was too small. Those could be the reasons
During a cluster headache attack, it is more likely to see increased blood pressure than decreased blood pressure. The pain and anxiety of an attack causes a physiological response that results in stress and increased BP.
Vasovagal syncope means that your parasympathetic nervous system (which calms and quiets your body) kicked in too strongly, causing a drop in blood pressure. This drop in blood pressure causes a lot of things to happen, two of which are fainting (syncope) and headache. The drop in pressure changes the pressure in your head as well, and the membrane surrounding your brain is sensitive to such pressure changes, and generally causes pain in the form of a head ache. When people take nitro for heart pain, the result is a drop in blood pressure, usually with an accompanying headache.
There are many different insects that can cause this reaction if you are bitten by one of them. it could be some type of a spider bite.
causes of swollen xiphoid process
heat and extreme pressure. also water freezing and melting.
It is caused by a decreased CSF pressure related to a small leak of CSF through the puncture site.
could be a tension headache or a tumor. Check your eyes and make sure one is not dilated more than the other. I would suggest a neurologist.
solid due to extreme pressure, even though it is composed of mostly iron and nickel.
A person feels headache pain when specialized nerve endings known as nociceptors are stimulated by pressure on or injury to any of the pain-sensitive structures of the head.