Sore Joints Virus What Physically Happens Inside Our Heads When We Have A Migrane ?

What Physically happens inside our heads when we have a Migrane ? - sore joints virus

I know that a cold or flu is caused by a virus, and the symptoms are our body, like to fight it, and I know that the stomach are caused by bacteria in the intestine, so that feels bad, but if we Headaches We headaces, blindness or visual impairment, joint pain, numbness, strange sensations, if that happens to us if we have a headache?