Category: A

  • Acatalasia

    An inherited condition which results in a lack of catalase in all tissue. An inborn lack of the enzyme catalase, leading to recurrent infections of the gums (gingivitis) and mouth. It is most common in the Japanese. A rare inherited disease in which there is an absence of the enzyme catalase. The gingival and oral…

  • Acarophobia

    An unusual fear of mites or ticks. Abnormal fear of small objects such as pins, needles, worms, mites, and other small insects. A psychological condition marked by an irrational fear of contracting scabies. In more severe cases, this fear may extend to small insects, spiders, or even tiny non-living objects.  

  • Acaricide

    A substance which kills mites or ticks. Any chemical agent used for destroying mites and ticks.  

  • Acariasis

    The presence of mites or ticks on the skin. Infestation with mites (e.g., the itch mite, which causes scabies); also called acaridiasis, acariosis. An infestation of mites and tick and the symptoms, for example allergy and dermatitis, that their presence may provoke.  

  • Acanthosis

    Acanthosis

    A disease of the prickle cell layer of the skin, where warts appear on the skin or inside the mouth. Overdevelopment and thickening of the prickle-cell layer of the outer skin, as in psoriasis. Breakdown or separation of the prickle-cell layer of the epidermis leading to cellular degeneration. Increased thickness of the prickle cell layer…

  • Abstainer

    A person who does not drink alcohol.    

  • Absorbent cotton

    A soft white material used as a dressing to put on wounds.  

  • Absorbable suture

    A suture which will eventually be absorbed into the body, and does not need to be removed.  

  • Absorb

    To take up or soak up something, especially a liquid, into a solid. To take in or soak up substances like heat, light, liquids, and gases.  

  • Abreact

    To release unconscious psychological tension by talking about or regularly remembering the events that caused it.