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Allergic Rhinitis in Children

• Allergic rhinitis can happen during certain seasons or year-round. There is often a family history of allergic rhinitis, eczema, asthma, or food allergy. Read on to learn details about treating and managing this condition.

Acoustic Neuroma

• Acoustic neuroma is a rare noncancer tumor. It affects hearing and balance when the tumor presses on the nerves in the inner ear.

Acute Myeloid Leukemia (AML): Symptoms

• Learn about the symptoms of acute myeloid leukemia (AML) and when to see your doctor.

Alcoholic Hepatitis

• Alcoholic hepatitis is liver damage caused by drinking too much alcohol over time. Learn about symtpoms, diagnosis, treatment, and possible complications.

Autoimmune Hepatitis

• Autoimmune hepatitis is when your body’s infection-fighting system (immune system) attacks your liver cells. This causes redness and swelling (inflammation) and liver damage.

Avascular Necrosis

• Avascular necrosis develops when blood supply to a bone is cut off. This causes the bone to die and can cause pain and joint problems.

Autistic Spectrum Disorder

• Autism spectrum disorder is a neurological and developmental disorder that usually appears during the first three years of life.

Attention-Deficit/Hyperactivity Disorder (ADHD) in Children

• Attention-deficit/hyperactivity disorder (ADHD) is a brain-based, or neurodevelopmental, disorder. It is often first diagnosed in childhood.

Atopic Dermatitis

• Atopic dermatitis is a chronic skin disorder. It is also called eczema. It often affects infants and may last until adulthood. It causes itchy, scaly patches on the skin.

Atrial Fibrillation

• Atrial fibrillation, or AFib, is a kind of abnormal heart rhythm or arrhythmia. AFib increases the risk for blood clots. These clots can then travel to the brain, causing a stroke. This is why AFib significantly increases the risk for stroke.