@FinchTH The document says if you have "a bump". That's going to be extremely common and non-specific (pimple, ingrown hair, insect bite, etc.). If everyone followed that advice faithfully not many would show up.
@FinchTH文件说如果你有“肿块”。这将是非常常见和非特异性的（丘疹、向内生长的头发、昆虫叮咬等）。如果每个人都忠实地遵循这个建议，那么就不会有多少人出现。