Thumb spica splint - to reduce thumb and wrist extension and radial deviation 
Compression - to reduce swelling
Ice
Depending on severity, may consider steroid injection to 2nd dorsal compartment (ECRL, ECRB)
Rarely used, may consider surgical debridement and release of the second dorsal compartment approximately 6 cm proximal to the radial styloid if the condition becomes severe and chronic
Intersection syndrome
Distal finger
Superior mesenteric artery syndrome
Finger amputation
Toxic megacolon
Fingertip laceration
Ogilvie's syndrome
Nail avulsion