Best treatment would be to find allergens causing symptoms and to avoid it...over the counter antihistaminics will be beneficial to you...Consult nearest allergy clinic for skin prick test and other modalities of investigations in which they will test you for various allergens and find out to what you are allergic...and they treat you with diluted doses of that allergen to desensitise your body to that allergen.. For constipation you should start taking a high fibre diet, incorporate more of fruits, green leafy vegetables and salads in diet.. Drink plenty of water....You should always take walk after meals and follow daily workout regime....With that fallow relaxation techniques like yoga, meditation,avoid alcohol, smoking, coffee, tea...take syp duphalac 10 ml at night time with milk or warm water....Consult nearest physician or gastroenterologist they will do the needful.