Hemorrhoids are swollen veins in the anal area that cause discomfort. They can be internal (painless, with minor bleeding) or external (painful, including thrombosis).

Atheromas and atherosclerosis are different medical conditions, even though they have similar names. Atheromas are benign skin cysts that form when the sebaceous gland duct becomes blocked, causing sebum to accumulate under the skin. They occur primarily on the face, neck, back, and scalp. They are usually painless, but can become inflamed or infected.