Anal itching with swelling is common in hemorrhoids, rectal prolapse, anal fistula and other diseases.
1. Hemorrhoids: hemorrhoids are divided into internal hemorrhoids, external hemorrhoids, mixed hemorrhoids three categories. External hemorrhoids are directly manifested as a swelling outside the anus, that is, hemorrhoidal nuclei. Internal hemorrhoids hemorrhoids out of the anus, can also be manifested as anal swelling. Mixed hemorrhoids have the characteristics of both internal and external hemorrhoids. Hemorrhoids often lead to incomplete anal closure, rectal secretions flow out of the anus and lead to itching.
2. Rectal prolapse: after the occurrence of rectal prolapse, the anus will appear swelling, swelling for the prolapse of the rectal mucosa, rectal secretion outflow, will lead to perianal eczema, resulting in itching.
3. Anal fistula: rectal secretions can flow through the fistula fistula and lead to anal itching, and external infection can be manifested as a swelling.
4. Other: if the anal papilloma, anal sinusitis, due to tissue hyperplasia, will lead to local swelling, due to secretion or inflammation stimulation, will lead to itching.
It is recommended that the patient go to the hospital in time, after diagnosis and treatment as prescribed by the doctor.