<s>[INST] Hi I have a small little red bump that recently appeared on my thumb. I assumed it was just a wart and have been putting rubbing alcohol on it to keep it clean. However, after doing more research it doesn t seem to be a wart and I can t figure out what it is. [/INST] Hello and welcome to HCM,The nature of small bump on the thumb can be determined after clinical assessment only.There are number of lesions which can present as lump on the thumb.Common lesions are warts, soft tissue swelling, etc.In case the swelling is due to soft tissue swelling, excision and histopathological examination will be required.Thanks and take careDr Shailja P Wahal </s>