My 11 year old son came home from school c/o dizziness, feeling like he was going to pass out, headache, and metallic smell (not taste), light sensitive, sweating . Came home and fell asleep for two hours. Has had headaches like this in 2 other times in the last month during school. causing him to come home early. Sounds like migraine but the metallic smell makes me think blood in the nose. Could this be something else