Is this just osteoarthritis or do I have a cyst too?

[CrazyRatLover]

My thumb has got bigger very quickly recently. I know it's osteoarthritis but the very surface feels quidgy like there's fluid in there. Does it need bashing with a bible? 🤣

Looks like a cyst

Dh had something similar which minor injuries said was a granuloma but it disappeared eventually.

It looks something like a cyst.

Try hot cloth regularly - might bring it to a head, otherwise see the pharmacist in a week if it hadn’t gone.

If you start to feel feverish - then get antibiotics quickly, obviously

That's how Heberden's Nodes start off. Don't try to burst it, they can lead to infection.

Has your GP confirmed that it is osteoarthritis, as opposed to rheumatoid arthritis? They occur in both, but many GPs fail to check further than a visual exam.

Thanks everyone.
Yes Osteo was confirmed quite a few years back now, along with inflammatory arthritis and lupus. It's only in the past 6 months this knuckle has got so big!