The acute phase of superficial phlebitis consists of superficial phlebitis and deep phlebitis. Superficial phlebitis manifests as linear nodules or strips along the course of the vessels with typical redness, swelling, and pain, and is easier to determine. Deep phlebitis is often associated with deep vein thrombosis, which may result in swelling and pain in the affected limb, aggravated by walking and relieved by rest. Depending on the etiology phlebitis can be divided into thrombophlebitis and non-thrombophlebitis. Thrombophlebitis is an aseptic inflammation of the veins with thrombosis associated with hypercoagulable blood, slow blood flow and damage to the vein wall. Most non-thrombophlebitis is due to chemical irritation and, to a lesser extent, to bacteria. Thrombophlebitis appears in the veins of superficial varicose veins, with hard nodules along the vessels that are palpable, painful to touch, with surface redness and swelling and high skin temperature. It is accompanied by manifestations of superficial varicose veins, such as dilated, bulging and tortuous superficial veins. Longer disease duration may present with nutritional skin changes such as skin atrophy, desquamation, hyperpigmentation, eczema, and refractory ulcers. Because it is a non-bacterial inflammatory condition, antibiotic treatment is not necessary. Symptoms of non-thrombophlebitis are red lines along the veins, high skin temperature, tenderness, fever, skin redness and swelling, etc. Patients may have fever and elevated white blood cells. Deep phlebitis, on the other hand, may present with predominant swelling and pain in the affected limb, which is aggravated by walking and may be relieved by rest.