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An abdominal aortic aneurysm happens when the wall of the aorta, the main artery that carries blood to the body, weakens and swells like a balloon in your abdomen. Smoking, high blood pressure, and atherosclerosis (hardening of the arteries) can cause it. If an aneurysm is not diagnosed and treated, the aorta can burst and cause life-threatening bleeding. You may feel sudden pain, lose consciousness, or go into shock. If the aorta hasn't burst, you may have no symptoms. Screening can discover an abdominal aneurysm early, when it's curable. Treatment may include surgery or observation.
Abdominal Migraine is a form of Migraine seen mainly in children. It's most common in children ages five-nine years old, but can occur in adults as well. Abdominal Migraine consists primarily of abdominal pain, nausea, and vomiting. The symptoms can last from 1 hour to three days. Symptoms may go away for weeks or months and then occur again. Over time, the condition usually goes away on its own. However, children who develop abdominal migraines are likely to go on to suffer migraine headaches as adults.
A skin abscess is an inflamed pocket of pus that develops below the skin surface. It causes swelling, pain, and tenderness on the skin. The swelling may feel fluid filled when pressed. The area of redness often extends beyond the swelling. Also called boils, skin abscesses often show up in places where you sweat or there is friction, such as the armpits, groin, buttocks, face, or neck.
Staphylococcus aureus and streptococci infections are the main cause. These bacteria can enter the skin through splinters, scrapes, and inflamed hair follicles.
Some skin abscesses rupture and drain on their own and some need to be treated by a doctor.
Bacteria from skin abscesses are dangerous if they spread to the bloodstream, lymph nodes, or deeper tissue.
Acetaminophen poisoning is an overdose of the over-the-counter pain medicine acetaminophen, also known as Tylenol. Acetaminophen poisoning may occur as a result of an accidental or intentional overdose. This condition is potentially deadly and requires emergency medical attention. If given quickly enough, an antidote to acetaminophen can help neutralize the poison.
Achalasia is a rare condition that makes it difficult for food and liquid to move from the esophagus into the stomach. It's caused by problems with the muscles and nerves of the esophagus and the lower esophageal sphincter, a muscle that normally would relax to allow the passage of food. It's not clear what damages the nerves and muscles in the first place, but infections or autoimmune diseases are possible causes. Achalasia usually appears in people ages 25 to 60 and sometimes in children. Medications, shots, endoscopy, or surgery may help ease achalasia. If not treated, achalasia can lead to weakness and malnutrition.
The Achilles tendon connects your calf muscle to your heel and makes it possible to point your toes, walk, jump, and run. It is the largest and strongest tendon in the body, but it can become weak from age or lack of use. Achilles tendon ruptures sometimes occur in "weekend warriors" when playing sports such as basketball, tennis, and racquetball. Middle-aged men who don't get regular exercise are most at risk for this injury. Surgery, special casts, and physical therapy help the tendon heal. Most people can resume normal activities after 4 to 6 months.
An ACL injury happens when you tear or overstretch the anterior collateral ligament on the inside of your knee. You can have a partial tear or a full tear. The ACL is most often injured during sports or other activities that cause you to make sudden stops and changes in direction. If you have an ACL injury, you may hear a loud popping sound or have severe pain or swelling in the knee. It also may feel like your knee is unstable. You may need surgery to reconstruct the ACL.
Acne occurs when pores in the skin become clogged, forming whiteheads, blackheads, and red, inflamed bumps called pimples. Pores are the opening of hair follicles, which contain oil glands that lubricate and protect the skin. Hormone changes, such as from puberty, can cause oil glands to produce excess oil. Oil, dead skin cells, and bacteria can build up and create a plug in the hair follicle. Acne can appear near the skin's surface as whiteheads and blackheads, or develop deeper down causing painful cysts. Most teenagers get acne when hormones are in flux, but it can also occur in babies, pregnant women, and even in middle age. Oily cosmetics, hair products, and certain medications can trigger acne outbreaks. Washing skin with a gentle cleanser and using OTC acne medication can help manage mild acne. Treatment for more severe cases may include antibiotics, prescription acne medications, chemical peeling, and other treatments to reduce scarring and drain and remove cysts.
An acoustic neuroma is a rare non-cancerous growth on a nerve that connects the brain to the ear. It grows slowly. While an acoustic neuroma is not cancer and won't spread, it may damage areas of the brain if it gets too big. Acoustic neuromas can affect hearing and balance. Keep in mind that other conditions cause similar symptoms -- such as dizziness and difficulty hearing -- and are more common than acoustic neuromas.
Acrocyanosis is a painless condition in which the hands and feet turn shades of blue, become cold, and sweat. It occurs when the skin's small blood vessels narrow and limit oxygen flow to hands and feet. Acrocyanosis doesn't cause health problems, but it can be uncomfortable and embarrassing. Women tend to develop acrocyanosis more than men. Usually, acrocyanosis is not treated. But in severe cases, medicine or surgery may be recommended.