Hi.. Thanks for the query.. As per your complain it seems that swollen left side forehead, temple, cheek bone down my neck on my left hand side very sore to touch now my lips feels like they are going numb left side seems most probably due to allergic reaction as sudden appearance of such symptoms are most probably seen in case of allergic reaction.. I would suggest you to consult an Allergist and get allergic tests like Patch test, RAST test, food challenge test etc can help in diagnosis and treatment can be done accordingly.. The tests will help in ruling out the exact cause of the allergen and once you know the cause of the allergic reaction you can avid exposure to it to prevent allergy attack.. He can be advised to take anti allergics like benadryl or levocetrizine.. Do cool compresses.. He can also be instilled an Immunotherapy that will help in reducing the severity and frequency of allergic attack.. Once the allergen is ruled out avoiding exposure to it can prevent the allergy symptoms.. Hope this helps.. Regards.