Jan 11, 2024 · Narrow stools that happen now and then probably are harmless. But in some cases, narrow stools — especially if pencil thin — may be a sign that the colon is narrowing or has a blockage.

Oct 14, 2023 · Causes Scar tissue, which can narrow the urethra, can be due to: A medical procedure that involves putting a tool, such as an endoscope, into the urethra. A tube that's put into the urethra …

Jul 20, 2024 · Coarctation of the aorta is a narrowing in a part of the body's main artery, called the aorta. The heart must pump more forcefully to send blood through the aorta and on to the rest of the body.

Atherosclerosis is a specific type of arteriosclerosis. Atherosclerosis is the buildup of fats, cholesterol and other substances in and on the artery walls. This buildup is called plaque. The plaque can cause …

Jul 12, 2025 · Renal artery stenosis is when one or more arteries that carry blood to the kidneys narrow. These are called the renal arteries. Having narrowed renal arteries means the kidneys don't get …

Aug 27, 2025 · Possible side effects of narrow band ultraviolet B therapy include redness, itching and burning. These side effects usually clear up within a few hours after treatment. Combining psoralen …

Jun 27, 2024 · The most common cause of spinal stenosis is wear-and-tear damage in the spine related to arthritis. People who have serious spinal stenosis may need surgery. Surgery can create more …

Aug 9, 2024 · Plaque can cause arteries to narrow, blocking blood flow. In PAD, plaque collects in the arteries of the arms or legs. Less common causes of PAD include: Swelling and irritation of blood …

Nov 9, 2021 · The goals of treatment for small vessel disease are to control the narrowing of the small blood vessels that can lead to a heart attack and to relieve pain. Medications for small vessel …

Kidney problems. High blood pressure can cause the blood vessels in the kidneys to become narrow or weak. This can lead to kidney damage. Eye problems. Increased blood pressure can cause …