Getting allergic reactions after having some foods after 4 or 5 hrs and will get Allergic reactions like small rashes(mosquito bite like shape), needle sensation, little itching, 50 paise coin size swelling from 3 years. Different reactions for different foods. Almost can't have meat and fruits n now vegetables also. Don't understood what problem i am facing n also have problems like erosive atranal gastritis,
B12 deficiency n depression. Plz help me out.