You'd better not believe it. Although this possibility is not ruled out, the probability is too small. Most of them are liars. You'd better go to the provincial museum of traditional Chinese medicine or to the city's Yiguang. If the problem is complicated, a responsible Chinese doctor will ask you to have a radiological examination or something. After all, saving talents is the first priority.
This independent Yiguang company may be better, but it is a bit exaggerated to say that it has a patent number.