I am suffering from hemorrhoids level 4. The doctor asked me to donate blood when I have grade 4 hemorrhoids, will it affect my health? Please advise, thank you doctor.

With the answers from Dr. Ngo Viet Thang - Department of Digestive Surgery, Vinmec Times City Hospital below, you will clearly understand the causes and symptoms of hemorrhoids and especially help you realize that modern hemorrhoid treatment is not as "terrible" as imagined.