What would cause a person to get hot with haedache and nausau after eating? after i eat i start getting hot , my head starts hurting and makes me nausaus.

You : You should get a complete medical evaluation wtih blood work. Sometimes if you absorb food too rapidly it can cause those symptoms. Keep a food diary of what you eat and what your symptoms are to see if there is a pattern. If you develop abdominal pain, light-headedness, vomiting or fever then you would need to be seen as an emergency.

Hot and HA : Several things are possible requiring an in-person evaluation. Here are some things that come to mind. Gall bladder disease, gastritis, dumping syndrome.