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An anorectal abscess is a collection of pus under the skin in the area of the anus and rectum.

Portal hypertension is high blood pressure of the portal vein, which is in your abdomen (belly). It collects nutrient-rich blood from your intestines and carries it to the liver for cleaning.

Acute arterial occlusion is a serious condition that occurs when blood flow in a leg artery stops suddenly. Read on to know what symptoms to look for, and when to get medical care.

Aspirin is a blood-thinning medicine. It helps keep blood clots from forming. Learn how it's used to treat atherosclerosis.

High cholesterol can harm your arteries, raising your risk for peripheral arterial disease (PAD).

Cilostazol is a medicine that can relieve leg pain caused by claudication, a common symptom of PAD. Here's how the medicine works and what you should know before taking it.

When you have PAD, a walking program can be very helpful. Here are some tips to get you started.

Posttraumatic stress disorder (PTSD) is a type of anxiety disorder. It can happen after you go through an extreme trauma, such as a car crash or combat. With PTSD, you constantly relive the trauma through nightmares, intrusive memories, and flashbacks. Therapy (also called counseling) is a very helpful treatment for PTSD.

Panic disorder is a type of anxiety disorder characterized by panic attacks. A panic attack is a sudden, intense fear that lasts for several minutes when there is no real danger. If you have panic disorder, your doctor may prescribe one or more medicines for treatment. Here's what you need to know.