It depends very much what you are allergic to, for example milk, rice, curry, pulses, certain fruits …. almost any kind of food could cause an allergy, every one is different. If you think you are reacting to your food, you can try cutting out most of what you eat and change for different kinds of foods and see if you feel better. I know this is hard to do.

I find this a rather odd question.
It has nothing to do with country and everything to do with each individual body.

Read the Elimination Diet article.

Nepal isn’t a problem. I’m coeliac and if you dhal bhat, their staple food which is basically, rice, lentils and veggies is both healthy and safe for you.
[This comment has been turned into the basis for an article. See Gluten Free Diet Nepal
to get all of Catherine’s excellent advice.

I’ve not been to Nepal so I can’t help you but I hope someone else can.
What is the staple food in Nepal? What have you found that you can eat so far? Anything you think you might be able to eat but are unsure about?