This is partly true but migraines can also be caused by stress and anxiety.
Fainting is a common symptom of heat stroke. The reason this happens to many people is the lack of fatigue. The best remedy is to keep yourself hydrated and have proper rest.
I hope it helps, Regards.
Infection of previous operation. The surgereon would need to go in and and remove the infection and possible a little more of the leg...
Newborns are susceptible to Vitamin K