Suggest Treatment For Chronic Headache, Asthma And Stomach Pain

teen girl with chronic asthma, stomach pain, pale and clammy skin. GI tests have not found a cause. She takes Symbicort, Singulair and Alberterol (as needed) and Miralax once per day for constipation. She had chronic headaches also, however, they are less frequent. She has felt awful for almost 2 years without any relief.