Talk to Vascular Surgeon on DVT In Legs

Asslamu Alaikum Dear Doctors my mother has been suffering from DVT for a long time. Its in the whole body but her legs are the ones affected the most. She cant walk properly. She is always in pain. A few days ago she had sever pain in her Arm at night and when she pressed firmly that part of Arm where the pain exactly was it was no more not more than 2 minutes later. Was that a DVT? Anyways its the legs that we are worried about the most . I also want to tell you that she was very addicted to eating raw rice. She ate too much of it. One day she was walking properly and the very next day she had pain in her legs also she didnt have the craving for raw nice anymore when she suffered it. Is that the reason she got DVT? She has got like 100 of mini clots in her legs and it happened after that day. Before that she had mini clots but they were not as many as they started to appear after she had sudden pain in her legs. The knees hurt the most . Please help me out what kind of doctor do i ne