Health Topics A-Z

Age-related hearing loss, also called presbycusis, is one of the most common conditions affecting older adults.

Age-related macular degeneration is an eye disease that can lead to significant loss of central vision. It happens when aging causes damage to the macula, the part of the eye that controls sharp, straight-ahead vision.

Alzheimer’s disease is a brain disorder that slowly destroys memory and thinking skills, and eventually, the ability to carry out the simplest tasks.

Amblyopia, commonly called “lazy eye,” is a vision condition that develops in childhood in which the brain and one eye fail to work together properly, causing reduced vision that worsens over time if left untreated.

Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig’s disease, is a progressive brain and nerve disease (neurological disorder) that causes the motor neurons controlling muscle movement and breathing to break down and die.

Anemia is the most common blood disorder in the United States. It develops when your blood has a lower-than-normal amount of healthy red blood cells or hemoglobin.

Anxiety disorders are mental illnesses that cause people to feel intense and persistent fears and worries that interfere with their daily life. Treatments like psychotherapy and medicine can help people manage the symptoms of anxiety disorders.

Aphasia is a disorder that results from damage (usually from a stroke or traumatic brain injury) to areas of the brain that are responsible for language. For most people, this damage happens in the left side of the brain. Aphasia impairs the expression and understanding of language, as well as reading and writing.

Arthritis is a broad term referring to conditions that lead to joint inflammation.

Atopic dermatitis, commonly known as eczema, is a chronic inflammatory skin disease that primarily causes itching and can also cause other symptoms.