Sept 2020 had meniscus surgery on knee . Was told to use crutches 2 weeks . 2nd day wrists and shoulders were so painful that I could hardly move them . After a couple weeks had blood work done . Only showed high blood inflammation. Rheumatologist put me on methotrexate and prednisone. 2 months good to go . Rheumatoid insisted I had RA . 7 pills weekly . Felt like trash every morning . So by late summer I backed off to 5 weekly pills . Saw rheumatologist for quarterly visit and told her I cut dosage . She agreed and thought I was doing fine . Had me cut to 4 , then 3 . I didn’t think I needed it at all, but listened to Dr and continued taking against my better judgement . In May a lump appeared on my neck on a Friday . Already had appointment with rheumatologist on Tuesday . She said get to your PCP real soon . Next day saw PCP . He ordered CT scan for that day . All it showed was 4 lymph nodes enlarged and something at base of tongue . PCP referred me to local ENT . Didn’t like that idea as I would have rather went to university hospital to be checked . Local ENT took 6 weeks and still no diagnosis. Went to ENT at university and with his biopsy found squamous cell carcinoma on my tongue . When I started taking MTX I read that taking it doubled chance for this type cancer . I am not a smoker or tobacco user or alcohol drinker . Surgeon said he can’t say MTX caused this but he said it never helped it either . Drs will not point fingers , we know that . So I had full body Pet Scan and also surgeon put me to sleep and took biopsy as he wanted to be sure it was primary tumor . Also looked down thru larynx and esophagus. No cancer found except base of tongue . I see radiation oncologist tomorrow, but it is looking like 7 weeks of radiation, 5 days a week and 7 weekly chemo treatments. I was told the 3-4 th week of radiation the inside of mouth is like one great big blister . If swallowing gets too difficult, a feeding tube would have to be used until treatments end. I wish I had quit taking MTX May of 2022 , when I wanted too . Have not had MTX in 3 months with absolutely ZERO arthritis issues . I guess that proves I didn’t need it after the wrists and shoulders were strained by the crutches .