My 19 year old daughter was hospitalized a month ago dehydration . They gave him fluids and he was discharged. She seemed to have improved, but a month later had similar symptoms including : severe headache , heaviness in the head , neck pain , is hot but no fever , nausea and dizziness.
Without a medical examination and history details is difficult to find out what might be happening . However, if your daughter is underweight , you should consider having an eating disorder such as anorexia nervosa . Other conditions that may cause symptoms include an autoimmune disorder (eg, lupus ) or Addison 's disease ( adrenal insufficiency). The recurrent nature of the symptoms of his daughter worry me , and I would recommend to return to the doctor for further evaluation .