Here I was thinking I was the only one with trouble; my hands have hurt for three months! I've been to acupuncture, herbalist, massage therapy, chiropractor, occupational therapy, just about everything under the sun! The most recent OT I've been to said my nerves are jacked up from a lifetime of poor posture and extreme weight loss in 2013, so she's been giving me some stretches and exercises which I THINK help.
Here are a few things that have helped me so far (pain is chronic, but to varying degrees):
Acupuncture - This won't be a one-time fix, but after 3 or 4 sessions on a weekly basis I found it easier to cope.
Moxa smoke - Go to your local Chinatown and see if you can find an herbalist to do this for you; it's basically an herbal blend that they burn and then put close to your skin to relax the tendons and muscles. Expensive, but effective.
Chiropractor - They'll be able to get you aligned, which will help with your overall posture to mitigate doing/holding things incorrectly.
De Graston/gua sha - This can be done by a chiropractor or physical therapist. They take a rounded metal bar and essentially scrape it across your problem area. Hurts like Hell, but it breaks up any adhesions that might form; leaves a gnarly bruise for a couple of days.
Things to be careful about:
Make sure you consult a licensed medical professional before getting a deep tissue massage, as certain areas can become aggravated and actually make you feel worse. Cupping is helpful when done by somebody who knows what they're doing (again, a traditional Chinese herbalist would know). My herbalist gave me a massage, cupping, and moxa treatment and I felt like $100 for about 4-5 days. I went to a different gal who gave me a deep tissue massage and cupping and the pain was excruciating.
Additionally, I got a guy, I suppose you could call him a kinesiologist, who comes and moves some stuff around, messes with my carpal bones to align them properly, then I'm good for about a week, but again, very expensive.
A lot of you guys are across the pond or down under, where healthcare is way better than here in the States, so hopefully you can get help easier than me.
Just remember that everybody's body is different so certain methods may work for you that don't work for others. I really f*cked up my body when I got an eating disorder.