what kind of 关节炎? Is it FengShi 关节炎?
If so, what she need to do is not to get throat infection in the future.
Get antibiotics to control throat infection. you can just goggle
"strep throat" you will find that FengShi 关节炎 and even FengShi
heart problem is caused by strep throat. It is kind of self-attack
problem. No cure till now; you can only control infection so that it
will not get worse.