My 4-year-old girl needs help to identify a medical problem.

1.5 years ago, problems arose where the girl's face was swollen at random moment. Usually it was after sleeping . From the beginning, only one side of the face went now, the thing has escalated already with the whole face. We can never predict in time when this will happen. Doctors think it's lymph. And we need to run diferent test with different appliances that our doctor do not have.At the moment, we have undergone various procedures, starting with blood tests and ending with allergies. No allergies were found. Examination with an X-ray machine did not reveal any changes in the pharynx of the nasopharynx that could cause this situation. Since the family doctor's hands are tied and he is no longer able to direct us anywhere, we have to turn to a private hospital, which in turn is expensive. Unfortunately, due to constant swelling of the face, my work is disrupted and I have to be at home with the child - I am sad and the child is also sad because she cannot play with friends. In addition, our income suffers.
I ask for your help in order to get money with the child, go to a specialist and find a solution to a problem that interferes with the child's quality of life. I'm afraid that one day her face will just be so swollen that it will restrict breathing and she will need to see an emergency doctor. Please pray that we resolve the issue.