Phlebitis (aka venitis) is inflammation of a vein. It commonly occurs with thrombosis, when it is caled [superficial] thrombophlebitis.

• It usually occurs in the legs
• It most commonly occurs in superficial veins

• Probability the superficial thrombophlebitis will cause a clot to break and transport in pieces to the lung is very low, unlike DVT

• Arteritis
• Vasculitis (category)