Hello! Im new here but looking for any information i can get. My 76 yr old dad was diagnosed with stage IV NSCLC in April 2017. He had 33 radiation treatments and probably 20-25 chemo treatments. He did really good on these treatments, 40% tumor shrinkage, hair loss, change in taste. He started immunotherapy about 4 months ago. Opdivo... since this time he has horrible mouth lesions and numerous skin cancers that have suddenly appeared on his arms, feet, and head. Has anyone else experienced similar side effects? He finally got to tasting food but now his mouth is so sore and bleeds so easily he has trouble eating! Thanks in advance!