Category: A

  • Adenomalacia

    Condition in which a gland or glands become soft.  

  • Adductor

    Muscle that, when flexed, pulls a part toward the body or the body’s vertical midline. Any muscle that moves one part of the body toward another or toward the midline of the body. Muscles that draw a body part, such as a finger, arm, or toe, inward toward the median axis of the body or…

  • Addict

    Person whose use of a particular substance (e.g., heroin, alcohol) is such that abrupt deprivation of the substance produces characteristic withdrawal symptoms. One who cannot control his or her need or craving for a substance or a behavior, especially when that craving results in adverse consequences or a decline in one’s ability to function effectively.…

  • Adactyly

    Absence of fingers and/or toes. Also called adactylia, adactylism.  

  • Acute myelocytic leukemia

    Malignant disease of blood-forming tissues characterized by uncontrolled proliferation of granular leukocytes (a type of white blood cell). It may occur at any age but is most frequent in adolescents and young adults. Onset, which often is gradual, is marked by spongy, bleeding gums; anemia; fatigue; bone pain; and recurrent infection. Treatment includes chemotherapy, repeated…

  • Acute childhood leukemia

    Progressive, malignant disease of the blood-forming tissues that is the most common type of cancer in children.  

  • Acromyotonia

    Abnormal pulling of the muscles that move the hand or foot, causing a contraction deformity; also called acromyotonus.  

  • Acromphalus

    Abnormal protrusion of the navel, sometimes marking the start of umbilical hernia.  

  • Acrodermatitis

    Inflammation or dermatitis of the skin of either the arms or the legs. Inflammation of the skin of the feet or hands. A diffuse chronic variety produces swelling and reddening of the affected areas, followed by atrophy. The cause is unknown and there is no treatment. Acrodermatitis enteropathica is a chronic form of skin inflammation…

  • Acid poisoning

    Poisoning resulting from the ingestion of a toxic acidic compound, such as hydrochloric acid, sulfuric acid, or nitric acid, many of which are found in cleaning products; for emergency treatment, contact a local poison control center for advice.