Pain from playing guitar in Intermediate Phalanges?

Hi there. I've been playing guitar for about a year and a half now. About 6 months ago i was experiencing really bad pain on my fretting hand (left). it was between my pink and ring knuckles. That pain is gone now. where im feeling pain is called the intermediate phalanges. its on my ring finger and on the middle part of it. below the fingernail and above where a wedding ring usually goes. Has anybody ever experienced this? it especially hurts when i try to fret a chord or whatever.