PLEASE Help.. My 86 year old mother`s left hand and wrist just for no reason started getting very bad pains ?

Then it became quite swollen.. DR. gave her pil;ls for sweling but the pain is still there ... Now she has same problem in her right hand and wrists.. Any info. on what this could be and any good cure ? Really hate seeing her in pain. Thankyou ?
Update: Thankyou but the Dr`s really don`t seem to know or CARE ????
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