Carpal tunnel from repetitive movement. Wrist braces at home and icy/hot can help but it's unfortunately not gonna get better until there's a break from the repetitive movements.

I can attest to this. I have similar issues from being a bar workhorse during peak. It's my favorite position and I love just getting into the zone drink sequencing during the morning rush. I had to take a week off from bar to recoup my hands and was put on drive thru while I recovered. My best friend introduced me into something called a "gyroball" which looks like a toy but is apparently a workout tool designed specifically to work out your forearm muscles. I play with it a couple times (super entertaining to do while watching TV) a week and noticed an improvement.

I remember a supervisor telling me that they're supposed to switch people's positions periodically throughout the day to prevent injuries/fatigue associated with repetitive motions which I think is really cool Starbucks takes that sort of employee well being into account.

Barista wrist is definitely a thing. I've found that wrist stretches for carpal tunnel are helpful.

You should see a doctor. I have tendonitis, and it's really important to stretch your hands and arms regularly, also let your manager/ssv know, hopefully, they'll put you on lighter duty. (I always try to accommodate if someone tells me they have a problem).

Contact Sedgwick