What Does Inflamed Tendons And Burning Blisters On Hand?

Hello I had a situation in our home town When a chemical got into out water called Mchm And we were not supposed to use forgot ran my hand under the water my hand started burning red And the next day big blister cover my palm Will I went to the doctor gave me steriod cream it clear the blister But i still have a lump I have been to six different doctors Xray said i inflammed tendons And Mri said Arthritis As of today I have swelling where the blister was red burning It has been a year And i have had not one doctor said it from the chemical or the water But this is when it all started Nothing was wrong with my hand before I don;t know If you can help I hope you can understand What i m try to ask I just wish I know if i can i found what happen I beleive it a deep tissue chemical burn I just want some releive I just don t know who else to see or what to do Thank you Carolyn