Your brain is a very powerful organ. It controls everything you feel, see, and think. But here is a surprising fact: the brain itself does not feel pain. It has no pain receptors. This means if someone touches the brain during surgery, the person does not feel it.
So how do we get migraines — severe and painful headaches?
The pain does not come from inside the brain. It comes from the parts around it — blood vessels and nerves. One important nerve is called the trigeminal nerve. When this nerve becomes inflamed or irritated, it sends intense pain signals. The brain then "feels" pain even though it is not injured.
Before a migraine starts, a slow wave of electrical activity travels through the brain. As it moves, it changes how brain cells function. If this wave passes through the part that controls vision, you may see wavy lines, flashing lights, or blurry spots — called a migraine aura.
This wave can be triggered by: too little sleep, too little water, skipping meals, bright lights, loud noises, or stress. In some people, hormonal changes during menstruation can also trigger a migraine.
When you eat ice cream too quickly, your head suddenly hurts. This is caused by a rapid change in blood flow and nerve signals — similar to a migraine, but much shorter. This is called brain freeze.
Understanding your triggers helps. When you take care of your body — sleep enough, drink water, avoid triggers — you can reduce migraines.
So even though the brain does not feel pain, it helps us feel it. That is why migraines feel so real and intense.