Have you done much energy work? It sounds as if you are still retaining some excess energy in your palm chakras. My hands and feet tingle a bit when I'm grounding myself, but they subside shortly thereafter when I'm done with the visualization.
You should visualize a grounding and see the energy flowing through your crown chakra and down through the rest of your body and back into the Earth. This should let any excess energy flow from your body and normalize again
If that doesn't fix the problem and your palms are still tingling, then you might have some chakras out of alignment. There are several in each hand. I suggest you find a diagram of them and visualize them as pyramids/triangles pointing to your heart chakra. The Heart Chakra is at the center, and those above, below, and to the sides should all be pointing to it. So you might have one to many in your palms that are pointing in the wrong direction, keeping the energy pooling and not moving back to your center.