### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Good Morning. My 9 month old had a reaction to what we thought was strawberries. Head to toe rash . Saw my doctor and allergist . Turns out he had serum sickness. My question is what foods should I be careful with as far as allergies (my husband is allergic to many things, dust mites, pets, dust, some seafood). Thank you Autumn

### output:

Hi! Basically serum sickness is immune complex mediated type 3 hypersensitivity reaction caused by exposure to protein of nonhuman animal sources occurring 4 to seven days after exposure. Main agents causing this reaction are vaccine, antitoxin, and several Chat Doctor. This reaction may present as rashes, joint pain, fever, abdominal pain, lymphadenopathy, malaise, itching, shock if further exposure occur. So try to prevent further exposure to the offending agents, for the management of present symptoms corticosteroids, antihistamines, analgesics or plasmapheresis if the symptoms are not responding to medical treatment. As you are worrying about food allergy and atop to environmental agents the want to tell you that it is type 1 hypersensitivity reaction mediated by IG E immunoglobulin, and it can be diagnosed by clinical examination and family history, it has genetic basis of occurrence but most commonly from maternal side. Food causing allergy most commonly in these patient are peanuts, milk, egg, fish, selfish, soda, wheat etc. but you can get the complete list by going for allergy panel test, and then you can avoid exposure to all allergens. You can keep epinephrine injections for emergency anaphylactic reactions. Hope your child will be fine very soon.