<s>[INST] My wife has a high sensitivity to foods with tryptophan, which seems to be in almost all foods.. What happens is here legs and arm get weak so much that she must sit down, breathing slow down, light headed. Yesterday she had an egg in the morning and had a attack, tuna fish sandwich and had a attack. Our family doctor is the one who diagnosed the sensitivity. [/INST] Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. First you need to do blood tests to confirm the diagnosis. If it's confirmed she need to avoid tryptophan in her diet to prevent symptoms from occurring if she has disorder in phenylalanine metabolism. It's a genetically transmitted autosomal recessive disorder. Hope I have answered your query. Let me know if I can assist you further. </s>