Early symptoms of phlebitis depend on the site of occurrence, but are usually characterized by redness, swelling, heat and pain. The common clinical sites of early symptoms include phlebitis of the upper extremities and phlebitis of the lower extremities: 1. Phlebitis of the upper extremities: it is often caused by the administration of intravenous fluids. At this time, the early performance of the patient is in the infusion of local or along the infusion of superficial veins along the region of the red, swelling, heat, pain, in common terms is along the vein drip appeared a red line, this red line accompanied by pain, swelling and foreign body sensation; 2, lower extremity phlebitis: often due to varicose veins do not get timely treatment, in the expansion of the superficial veins of the formation of the thrombus, thrombus and then irritation of the veins led to phlebitis At this time, patients will show redness, swelling, heat and painful hard nodules locally in the lower limbs, and the pain will be aggravated by touching, especially when standing upright and walking, these symptoms will be aggravated. No matter what kind of phlebitis, it is a kind of sterile inflammation, so you can use local cold compresses, which can significantly improve the symptoms. Some topical medications can also be used to localize the inflammation, which can be very therapeutic. For phlebitis of the upper extremities, it is important to avoid future intravenous infusions at the same site, which usually do not recur. For phlebitis of the lower extremities, which is often caused by varicose veins, early surgical treatment is recommended after the inflammation is under control because such phlebitis can recur easily, and severe phlebitis without timely surgical treatment can aggravate the further extension of venous thrombosis to the deep veins, which can lead to serious complications such as pulmonary embolism once the thrombus has caused dislodgement. Therefore, it is important to seek timely medical attention for either type of phlebitis to avoid adverse consequences. Timely treatment of early phlebitis can lead to clinical cure.