Hi, I have seen your query and understand your concern. You have mentioned that you have developed the rash all over your body after consuming milk and some food. It looks like you are allergic to some part of the food you ate. Development of rash or raised red bumps after immediately eating some sort of food is called urticaria. It is very itchy. Some people are allergic to some foods like seafood, nuts like groundnuts,etc. They tend to develop urticaria immediately or within few hours after eating it. Some people also develop symptoms called anaphylaxis after eating such foods. Anaphylaxis has symptoms like wheezing, shortness of breath, swelling of your lips and around eyes, sudden decrease of your BP. Be really cautious if you develop any such symptoms, as its a medical emergency and needs immediate injection with a drug called adrenaline. You have mentioned that you have developed the vomiting and irregular bowel movements after one day after eating the food, and then developed the rash. So, it must be some viral infection causing you the above rash. Viral infections resolve by themselves in few days. So, just try to use a drug called chlorpheniramine maleate at night for 2 to 3 days. It will help to heal the rash if its due to allergy. Then, if it doesn t resolve or if it comes back again after eating anything else, just consult a allergy specialist to test if you really have an allergy.