My plam hurts like a aching pain/ cramping pain when my thumb touches my pinky . i have had no injury or recent injury. to neither what causes this?

A Long List!: Many things can cause pain in the palm of the hand. More common things would include a muscle sprain or tendinitis (inflammation). These should improve with rest, icing, and elevation of the hand. Other possibilities include a mass (growth), such as a ganglion cyst, or carpal tunnel syndrome. If it doesn't improve with rest in 7-10 days, see your family doctor.