Swollen blood vessels after infusion, this situation is because the infusion of drugs on the endothelial lining of the blood vessels produced stimulation, triggering the inflammation of the endothelial lining of the blood vessels and thus lead to local inflammatory reaction and edema. This kind of phlebitis can be treated with hot compresses or physiotherapy to promote blood circulation so that the localization can be absorbed more quickly. Medications such as Xylitol or heparinized ointment can also be applied topically, which usually relieves pain and reduces swelling. Non-steroidal oral anti-inflammatory drugs such as ibuprofen or diclofenac sodium can also be used, both for pain relief and to reduce inflammation. Generally, the swelling of the entire blood vessel will completely resolve within 1-2 weeks, but in the case of thrombosed superficial phlebitis, it can sometimes take up to six weeks for it to be completely absorbed.