Tendinitis of wrist and playing racket sports?

I suffered from tendinitis of the wrist (the tendon that connects the thumb to the wrist) about a year ago, and also about 9 years ago. Both times after many months of on and off pain the doctor fixed it via a cortisone shot. I used to be a heavy badminton player but quit the game due to strain on my wrist. I am also a squash player and continue to play the game. However, anytime I play more than 1-2 times/week my wrist starts to hurt, forcing me to back off. Seems the tendon in the right wrist is chronically weak. Is there anything that can be done to 'strengthen' it? Will it get worse as I get older - I would hate to have to stop playing squash. Any advice is appreciated.

squeezing a tennis ball can help strengthen the muscles in the wrist. You should wear a wrist support when you play squash, you've got to support the week.. It's hard to say if it will get worse it depends upon your strengthening it and not overdoing sports.

Dehydration can cause severe pain in the muscles. I recommend you drink purified water mixed with mineral water 50/50. This will replace the minerals that are exiting your body continuously.

I suggest that adults and children drink 40 ounces of water per 100 pounds of body weight every day. Realize that exercise, ambient temperature, and state of health affect the water needs of your body. One tip for athletes: it is healthier to drink a sports drink or water than fruit juice, soda, coffee, or milk during competition or active training periods