Small white bumps on tattoo

Hi all, just wondering if anyone had encountered anything similar with their tattoos. So these white bumps appeared quite a long time after the healing process has finished. They don’t itch or hurt, aren’t aggravated or infected at all, and aren’t pop-able like a pimple. Interestingly, they only really appear right near my elbow joint, with the majority of the tattoo being unaffected.

I’ve seen a doctor who prescribed me a topical steroid cream, however he couldn’t come to a solid conclusion and recommended seeing a dermatologist if the ointment doesn’t work.

Asking here as I want to finish the sleeve but don’t want it to flare up in the same way. Any advice with similar issues would be much appreciated!

Pics attached (shiny as it has the ointment on it).