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Abscess
An Abscess is a confined pocket of pus that collects in tissues, organs or spaces inside the body. When an area in the body becomes infected, the body's immune system sends white blood cells to fight the infection. These cells collect and combine with the damaged tissue and germs, creating liquid called pus. An abscess is characterised by a painful, swollen lump that's filled with pus.
Treatments include draining the abscess and antibiotics.
Abdominal aortic aneurysm
An enlargement of the aorta, the main blood vessel that delivers blood to the body, at the level of the abdomen.
An abdominal aortic aneurysm (AAA) can be life-threatening if it bursts. Abdominal aortic aneurysms are most common in older men and smokers.
An AAA often grows slowly, without symptoms. As it grows, some people may notice a pulsating feeling near the navel. Pain in the back, stomach or side may be signs of impending rupture.
Stopping smoking may slow their growth. Small ones may only need monitoring. Aneurysms that are too large or growing too quickly should be repaired with surgery.
AAA screening
Abdominal aortic aneurysm (AAA) screening is a way of checking if there's a bulge or swelling in the aorta, the main blood vessel that runs from your heart down through your tummy.

Your doctor can confirm the presence of an AAA with an abdominal ultrasound, abdominal and pelvic CT or angiography. Treatment depends on the aneurysm's location and size as well as your age, kidney function and other conditions. Aneurysms smaller than five centimeters in diameter are typically monitored with ultrasound or CT scans every six to 12 months. Larger aneurysms or those that are quickly growing or leaking may require open or endovascular surgery.
Autism

Autism, or autism spectrum disorder (ASD), refers to a broad range of conditions characterized by challenges with social skills, repetitive behaviors, speech and nonverbal communication. According to the Centers for Disease Control, autism affects an estimated 1 in 54 children in the United States today.

Common symptoms include difficulty with communication, difficulty with social interactions, obsessive interests and repetitive behaviours.
Early recognition, as well as behavioural, educational and family therapies may reduce symptoms and support development and learning.
Athlete's foot
Athlete's foot (tinea pedis) is a fungal infection that usually begins between the toes. It commonly occurs in people whose feet have become very sweaty while confined within tightfitting shoes. Signs and symptoms of athlete's foot include a scaly rash that usually causes itching, stinging and burning.
Asthma

Asthma is a condition in which your airways narrow and swell and may produce extra mucus. This can make breathing difficult and trigger coughing, a whistling sound (wheezing) when you breathe out and shortness of breath. For some people, asthma is a minor nuisance.

The symptoms may sometimes flare up.
Asthma can usually be managed with rescue inhalers to treat symptoms and controller inhalers that prevent symptoms. Severe cases may require longer-acting inhalers that keep the airways open, as well as oral steroids.
Arthritis

Arthritis is the swelling and tenderness of one or more of your joints. The main symptoms of arthritis are joint pain and stiffness, which typically worsen with age. The most common types of arthritis are osteoarthritis and rheumatoid arthritis.

Symptoms include pain, swelling, reduced range of motion and stiffness.
Medication, physiotherapy or sometimes surgery helps reduce symptoms and improve quality of life.
Appendicitis
Appendicitis is an inflammation of the appendix, a finger-shaped pouch that projects from your colon on the lower right side of your abdomen. Appendicitis causes pain in your lower right abdomen. However, in most people, pain begins around the navel and then moves. 
This is often accompanied by nausea, vomiting, poor appetite, fever and chills.
Appendicitis is usually treated with surgery and antibiotics. If untreated, the appendix can rupture and cause an abscess or systemic infection (sepsis).