The anal congestion and edema may be caused by hemorrhoids and perianal abscesses. Patients with hemorrhoids will form fleshy bumps shaped protrusions at the anus, and if the nucleus of the hemorrhoid appears enlarged, there may be corresponding edema and congestion around the anus, and you can use hemorrhoid creams and suppositories for external use, together with oral anti-inflammatory and decongestant Chinese and Western medicines, and the symptoms will be significantly improved. The most initial symptoms are subcutaneous abscess and congestion at the anal verge, accompanied by strong pain and fever. In the early stage, oral antibiotics and topical blood-boosting and pain-relieving drugs can be used to relieve the symptoms, but if the abscess breaks down and the pain increases, surgery is recommended to cure it.