The correct spelling of the word "apophylaxis" can be difficult to discern due to its uncommon use. The word is pronounced /ˌæpə(ʊ)faɪˈlæksɪs/ with four syllables, starting with a short "a" sound followed by "p" and "o" sounds. The middle syllable features a long "i" sound and the "ph" combination produces a "f" sound. The final two syllables include a short "a" sound, followed by an "ksis" sound. It is important to check this spelling when using it in professional or academic writing.
Apophylaxis is a rare medical condition characterized by the sudden onset of an asthma attack or other allergic reactions in response to stimuli that were previously tolerated. This condition is classified as an immediate hypersensitivity reaction and has been linked to certain medications, food products, or environmental irritants.
During an apophylactic episode, an individual may experience a range of symptoms, which can vary in severity and include difficulty breathing, wheezing, coughing, skin rashes, hives, throat swelling, and in severe cases, anaphylaxis. These symptoms occur rapidly after exposure to the triggering substance, and if left untreated, they can progress rapidly and become life-threatening.
The exact cause of apophylaxis is still not fully understood, but it is believed to involve an abnormal immune response in which the body's immune system overreacts to harmless substances that it mistakenly considers as threats. This immune response triggers the release of chemical mediators, such as histamines, which produce the allergic symptoms.
To manage and prevent apophylaxis, individuals may be prescribed medications, such as antihistamines or corticosteroids, to reduce the severity of their symptoms and prevent future allergic reactions. In severe cases, individuals may need to carry an epinephrine auto-injector (commonly known as an EpiPen), which provides immediate treatment by injecting a dose of epinephrine to counteract the allergic response and alleviate symptoms.
Overall, apophylaxis is a condition characterized by sudden-onset allergic reactions, which if left untreated, can escalate rapidly and pose a significant risk to an individual's health and well-being.
A diminution of the phylactic power of the blood fluids, constituting the negative phase of opsonic or vaccine therapy.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.