I'm a 18-year-old guitarist, and lately I've been having a sensation of wrist weakness which manifests mostly after my play, and it slightly affects my wrist through most of the day. I'm playing usually over 4 hours per day, due to my activity in various bands, so my guess is this is some kind of a professional deformation - a state of illness or an injury that happens if you professionally do sports or play an instrument.
Anyway, this started to happen about a month ago, and I've decided to drop guitar for about two weeks before slowly returning to full-time activity. Well, since I've started, the weakness isn't as bad as it was a month ago, but it's still there. My grip is sort of the same strength as it was before it had happened, my hand doesn't tingle as if it's spasming, and there's no pain whatsoever. I've been reading such a state of weakness could also affect your entire arm, and progress up to the shoulder, but this also doesn't happen. Still, I fear it could negatively affect my play in the future, so I ask for help.
Also, recently I've noticed that ever since I've started playing guitar, I quit working out my muscles, and ever since I've resumed doing push-ups and other exercises my wrist feels a bit better, but not perfect. The symptoms might come back eventually.
I know I probably have to see a doctor, so please save those comments for later notice. Does anyone have any similar experiences or suggestions on what to do in the situation?