| IR | drop of voltage across a resistor produced by a current; ileal resection; immune response; immunizat... |
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| NR | do not repeat [Lat. non repetatur]; nerve root; neural retina; neutral red; noise reduction; nonreac... |
| PTR | patellar tendon reflex; patient termination record; patient to return; peripheral total resistance; ... |
| SGR | Sachs-Georgi reaction; Shwartzman generalized reaction; skin galvanic reflex; submandibular gland re... |
| WFR | Weil-Felix reaction; wheal-and-flare reaction |
| anti-allergic and respiratory system agents | A collective term for drugs used to treat allergic reactions as well as those drugs that produce an effect on the respiratory system. (12 Dec 1998) |
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| aspergillosis, allergic bronchopulmonary | Aspergillosis of the lung occurring in an individual with long-standing bronchial asthma. It is characterised by pulmonary infiltrates, eosinophilia, elevated serum IgE and immediate type skin reactivity to aspergillus antigen. (12 Dec 1998) |
| vasculitis, allergic cutaneous | Vasculitis due to allergic reaction, marked by such cutaneous lesions as papules, macules, vesicles, urticarial wheals, purpura, and small ulcers, and accompanied by itching and usually a slight fever and malaise. (12 Dec 1998) |
| rhinitis, allergic | The medical term for hayfever. (Hay fever is a misnomer since hay is not a usual cause of this problem and there is no fever. Many substances cause the allergic symptoms in hay fever. Allergic rhinitis is the correct term for this allergic reaction. Rhinitis means irritation of the nose and is a derivative of rhino, meaning nose.) symptoms include nasal congestion, a clear runny nose, sneezing, nose and eye itching, and tearing eyes. Post-nasal dripping of clear mucus frequently causes a cough. Loss of smell is common and loss of taste occurs occasionally. Nose bleeding may occur if the condition is severe. Eye itching, redness, and tearing frequently accompany the nasal symptoms. (12 Dec 1998) |
| rhinitis, allergic, perennial | Allergic rhinitis (hayfever) that occurs throughout the year. (12 Dec 1998) |
| rhinitis, allergic, seasonal | Allergic rhinitis (hayfever) which occurs during a specific season. (12 Dec 1998) |
| conjunctivitis, allergic | Conjunctivitis due to hypersensitivity to various allergens. (12 Dec 1998) |
| neuritis, experimental allergic | An autoimmune demyelinating disorder of peripheral nerves produced by injection of peripheral nerve tissue protein. (12 Dec 1998) |
| dermatitis, allergic contact | A contact dermatitis due to allergic sensitization to various substances. These substances subsequently produce inflammatory reactions in the skin of those who have acquired hypersensitivity to them as a result of prior exposure. (12 Dec 1998) |
| encephalomyelitis, allergic | An experimental demyelinating disease produced in animals by injections of myelin fractions in order to study the relationship between hypersensitivity and the demyelinating diseases. (12 Dec 1998) |
| experimental allergic encephalitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| experimental allergic encephalomyelitis | <pathology> An autoimmune disease that can be induced in various experimental animals by the injection of homogenised brain or spinal cord in Freund's adjuvant. The antigen appears to be a basic protein present in myelin and the response is characterised by focal areas of lymphocyte and macrophage infiltration into the brain, associated with demyelination and destruction of the blood-brain barrier. Sometimes used as a model for demyelinating diseases, although whether this is entirely justifiable is not clear. (18 Nov 1997) |
| extrinsic allergic alveolitis | <radiology> Exposure to organic dust less than 5u in size, recurrent episodes of fever, chills, dry cough, dyspnea following exposure after 6 hr interval (10-40% assymptomatic), spontaneous resolution in 1-2 days, farmer's lung, Pandora's pneumonitis, bird-fancier's lung, mushroom worker's lung, bagassosis, malt worker's lung, maple bark disease, suberosis, sequoiosis see: acute extrinsic allergic alveolitis, hypersensitivity pneumonitis (12 Dec 1998) |
| accelerated reaction | A response occurring in a shorter time than expected; the cutaneous manifestations occurring during the period between the second and tenth day following smallpox vaccination; because it is intermediate between a primary reaction and an immediate reaction, it is regarded as evidence of some degree of resistance. Synonym: vaccinoid reaction. (05 Mar 2000) |
| acid reaction | Any test by which an acid reaction is recognised such as the change of blue litmus paper to red, an excess of hydrogen ions over hydroxide ions in aqueous solution indicated by a pH value less than 7 (at 22캜). Compare: dissociation constant of water. (05 Mar 2000) |