Itchy labia

I’ve had minor irritation on my outer labia about a year back but it keeps coming back with itchiness sometimes. On some occasions it would happen once a month for a couple of days, sometimes it may be daily thing going away for a short while. I’ve noticed there started to appear a couple of bumps like small pimples , and overall it’s harmless and only in one place always. I’ve used some ointments for irritation but those don’t help. Worth mentioning that it’s there both when i wax and shave. Sometimes when i’m lazy and doing nothing too but i guess more rarely. So i suppose it has to do with panties or something. Used clear natural stone deodorant too thinking it could’ve been sweat related thing. Any suggestions as for creams or other solutions? Thanks! It’s really annoying and i at times can’t stop scratching it until i feel it might be too sensitive to continue already. I am not overweight, not working out, rather clean (use water after the toilet most of the times, pat myself dry always after toilet, no exessive soaps or perfumes, no perfumed or wet wipes, not using daily pads either so only panties and maybe some synthetic is what i can think of as a cause) BUT maybe I’ve had some bacteria that I don’t know of that requires special treatment - please suggest. 🫶🏼🫶🏼🫶🏼