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When a patient has external hemorrhoids, they will lie under the skin around the anus. They can become very itchy and may bleed. Sometimes, the blood may accumulate and form a thrombus (clot), which can be painful; the area will swell and become inflamed. External hemorrhoids are more likely to present with pain.
Hemorrhoids are veins in the wall in your rectum and anus that have become twisted, swollen, and inflamed. They can form either internally or externally, and the resulting lumps can cause pain and bleeding.f your hemorrhoids are external, your symptoms can include swelling or a lump (blood clot) around your anus. These are referred to as thrombosed external hemorrhoids, and can be quite painful. Depending on your toilet habits, you can aggravate your problem, causing additional irritation, bleeding, and itching.