Valtrex (valacyclovir) is an antiviral medication used to treat infections with: 1  herpes zoster (shingles), 2  herpes simplex genitalis (genital herpes), 3  and herpes labialis (cold sores).
Hemorrhoids are lumps or masses of tissue in the anus, which contain enlarged blood vessels. Any increase in abdominal pressure may produce hemorrhoids. This may be from: Repeated straining to have a bowel movement, especially in people who suffer from frequent constipation.
Hemorrhoids develop when the channels that carry blood away from the anus and rectum become dilated (widened). They are classified according to their location. External hemorrhoids develop in the anus, internal hemorrhoids in the rectum. Many people have both.