Thanks for writing to us.
Your sister is suffering from polyarthitis, the cause of this might be Rheumatoid arthritis
(RA), systemic lupus erythematosus
(lupus), psoriatic arthritis
, osteoarthritis (OA), Infectious arthritis
or crystal deposition arthritis
I would suggest getting this evaluated by an orthopedician/Rheuatologist for an accurate diagnosis and appropriate management.
I would also like to give some advice to make the life better and to fight with these pains-
Do regular physiotherapy of joints.
Hot fomentation to decrease the joint stiffness
Hot bath of Epsom salts (magnesium sulphate)-Magnesium has both anti-inflammatory and anti- arthritic properties and it can be absorbed through the skin.
Wishing you good health...
Dr Saurabh Gupta.