Why does the palm of my hand hurt when I put pressure on it?

[Corey]

When I do push ups my palm gets a sharp pain through it around the lower right part of my palm, but this only happens when I put pressure on it. This didn't start happening until I went to basic training and then it started hurting periodically but now a year later it seems to be hurting all the time, sometimes even several hours after I try and use it. As you probably guessed, I'm in the army and this is making it difficult for me to do my job. Any ideas on what this could be would be helpful.