NSAIDs for pain
Compression
Antibiotics if infection present
Anticoagulation if associated with DVT or septic pelvic thrombophlebitis
Phlebitis
Superficial thrombophlebitis due to VTE, chronic venous stasis
Lymphangitis
Trauma from peripheral venous access 
Deep venous thrombosis
Medication infusion related
Colitis
e.g. Aztreonam, vancomycin, phenytoin, amiodarone, dobutamine, concentrated potassium,