Dehydration "In my experience ... typically causes pain and numbness in your hands, but it can also cause cramping. Inflammation and swelling of the tendons in your wrist can compress the median ...

How to treat it: Store-bought compression socks can help reduce swelling by returning blood from the extremities, like the feet, back to the rest ... affect the hands and arms too.

Louis Cardinals catcher Willson Contreras (hand) is dealing with swelling in his left hand ... and four RBI in the first six contests. Check back to see if he's available on Thursday.