Diseases and Conditions

Find doctor-approved information about symptoms, causes, diagnosis, treatment and prevention of common diseases and conditions.

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  • Abdominal Aortic Aneurysm (AAA)

    An abdominal aortic aneurysm is when a weak area in the aorta swells up like a balloon. It can cause…

    Illustration of a human body with close-ups of a normal aorta and one with an abdominal aortic aneurysmAmerican Academy of Family Physicians Logo
  • Abnormal Uterine Bleeding

    Abnormal uterine bleeding is heavy or unusual bleeding from the uterus (through your vagina) throughout a woman’s monthly cycle.

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  • Abusive Head Trauma

    Abusive head trauma (shaken baby syndrome) is a form of child abuse that can be deadly or leave a baby…

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  • ACL Injuries

    ACL injuries have become more common among athletes, women, and children. PEP training programs can help with prevention.

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  • Acne

    Acne is a common skin condition that develops when the hair follicles in your skin are blocked by dead skin…

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  • Acute Bronchitis

    Learn about the symptoms, causes, treatment and prevention of acute bronchitis, a lung infection usually caused by a virus.

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  • Addison’s Disease

    Addison’s disease is a condition that affects your body’s adrenal glands. It interferes with your body’s ability to produce certain…

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  • Adhesive Capsulitis

    Adhesive capsulitis is known as frozen shoulder. It causes shoulder pain and stiffness, due to surgery, injury, and some medical…

    Man sitting on sofa, holding shoulder in painAmerican Academy of Family Physicians Logo
  • Alcohol Abuse

    Alcohol abuse is a pattern of drinking too much alcohol too often. This can harm your work, school, and…

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  • Allergic Conjunctivitis

    Allergic conjunctivitis is called “pink eye.” It causes your eye to become irritated, swollen, itchy, sore, and watery.

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  • Allergic Rhinitis

    Learn about the symptoms, causes, diagnosis, treatment and prevention of allergies and allergic rhinitis (hay fever).

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  • Alopecia Areata (AA)

    Alopecia areata is a disease of your immune system that causes unpredictable hair loss and emotional challenges.

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  • Alzheimer's Disease

    Alzheimer’s disease is a type of dementia. The symptoms are associated with physical and functional changes in the brain.

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  • Amblyopia

    Amblyopia (lazy eye) develops in childhood when one eye doesn’t work properly with the brain. Left untreated, it can lead…

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  • Amenorrhea

    Amenorrhea is the absence of menstruation or a monthly period. Learn about the various causes and treatments for primary and…

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  • Anal Fissure

    Anal fissures are small tears in the lining of the lower rectum. They are usually caused by straining during a…

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  • Anal Fistulas

    An anal fistula is an abnormal connection that forms between the anus and the skin outside of it. It usually…

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  • Anaphylaxis

    Learn about the causes and treatment of anaphylaxis, a severe, life-threatening allergic reaction.

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  • Anemia

    Anemia is a common blood disorder that affects your red blood cells. Learn about the types, causes, treatments, and prevention…

    Illustrative comparison of normal amount of red blood cells and anemic amount of red blood cellsAmerican Academy of Family Physicians Logo
  • Angina

    Angina is a heart condition that causes chest pain or pressure.

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