I have had this strange pain in the palm of my left hand for a few months now ... so was wondering whether it might be some kind of repetitive strain injury? I'm only 28 and terrified that ...

they also caused a significant increase in repetitive strain injuries (RSI). Mainly caused by poor posture and stress, RSI can lead to pain, numbness and tingling sensations in the hand and arm ...

Repetitive Strain Injury (RSI) is damage to the fingers, wrists and other parts of the body due to repeated movements over a long period of time, often while sitting at a computer screen.