a neighbour had this a couple of years ago.
we assumed she'd been leaning on the edge of an old table and the varnish had come off.
but circumstances proved not. sometimes hadn't been at the table at all.
she was t hosp appt once and shewed it to docs, but they just shrugged.
never did get to the bottom of it. she had many chronic conditions, mostly rheumatology, and then other pressing medical issues, so this phenomenon was forgotten about.
we wondered if it was a reaction to some medication, but her primary consultant, rheuma, had no idea.
let's see if we can find any common details; mostly women, over 60s,; what about medical conditions/ drugs.
has anyone shewn it to a pharmacist.