It's a common issue on laptops with the Synaptic pad.
I have mine disabled and use an external mouse. I'm much happier using a mouse than the pad, and I don't have the frustration of losing 10 minutes typing because the "mouse" went crazy.
You should be able to download a utility to manage the pad from your laptop vendor. Mine is Dell, and, as I said, I have it set up to be disabled if it detects a USB mouse. So when I have the mouse plugged in, the pad is disabled. If there's no mouse, then the pad works.
Time flies like an arrow. Fruit flies like a banana!