Hypersensitivity pneumonitis refers to an inflammation of the lungs caused by repeated breathing in of a foreign substance, such an organic dust, a fungus, or a mold.
The technical name for it is Hypersensitivity pneumonitis which is an "inflammation of the lungs due to breathing in a foreign substance, usually certain types of dust, fungus, or molds." https://health.google.com/health/ref/Hypersensitivity+pneumonitis
NPR had a brief in 2010 about hypersensitivity pneumonitis in some wind players whose horns were trapping various mold and bacteria.
Since we do not understand what causes idiopathic interstitial lung diseases, there is no way to prevent them. What can be done is to prevent extensive scarring of the lungs by making the diagnosis shortly after the first symptoms develop.
Pneumonitis refers to lung tissue inflammation. Bisegmental pneumonitis refers to inflammation of the lung tissue with occurs in two segments.
A number of different types of HP are known, since a wide range of allergens may produce an allergic reaction in the lungs. Many of them produce similar symptoms and abnormal physical findings, but some have their own typical features.
Wet basements can cause allergic reactions, runny noses, itchy-watery eyes, coughing, sneezing, throat irritation, asthma, hypersensitivity pneumonitis and a fever. http://www.ehow.com/list_6523214_health-risks-wet-basements.html#ixzz1MwTVZZ3l
It is a form of lung disease that looks like ground glass on x-ray and CT scans. The most common causes of ground-glass opacity include usual interstitial pneumonia, nonspecific interstitial pneumonitis, desquamative interstitial pneumonia, hypersensitivity pneumonitis, pulmonary oedema and pulmonary haemorrhage, and pneumonias (particularly pneumocystis carinii pneumonia). Less common causes include alveolar proteinosis, acute interstitial pneumonia or other causes of diffuse alveolar damage or the adult respiratory distress syndrome, respiratory bronchiolitis and early radiation pneumonitis.
The accented syllable in "Hypersensitivity" is "-sen-".
DefinitionHypersensitivity pneumonitis is inflammation of the lungs due to breathing in a foreign substance, usually certain types of dust, fungus, or molds.Alternative NamesExtrinsic allergic alveolitis; Farmer's lung; Mushroom picker's disease; Humidifier or air-conditioner lung; Bird breeder's lungCauses, incidence, and risk factorsHypersensitivity pneumonitis usually occurs in those who work in places where there are high levels of organic dusts, fungus, or molds. For example, farmer's lung is the most common type of hypersensitivity pneumonitis. Repeated or intense exposure to dust from moldy hay, straw, and grain can lead to lung inflammation and acute lung disease. Over time, this acute condition may turn into long-lasting (chronic) lung disease.The condition may also result from fungus present in humidifiers, heating systems, and air conditioners found in homes and offices. Exposure to certain bird droppings (for example, among bird owners) can also lead to hypersensitivity pneumonitis.SymptomsSymptoms of acute hypersensitivity pneumonitis may occur 4 - 6 hours after you have left the area where the foreign substance is found. These symptoms may include:ChillsCoughFeverMalaise(feeling ill)Shortness of breathSymptoms of chronic hypersensitivity pneumonitis may include:Breathlessness, especially with exertionCough, often dryLoss of appetiteUnintentional weight lossSigns and testsYour doctor may hear abnormal lung sounds called crackles (rales) when listening to your chest with a stethoscope.Lung changes due to chronic hypersensitivity pneumonitis may be seen on chest x-ray. Other tests may include:Aspergillus precipitins testBronchoscopy with washings and biopsyCBCHigh-resolution CT scan of the chestHypersensitivity pneumonitis antibody panelsPulmonary function testsVideo-assisted or open-lung biopsyTreatmentFirst, the foreign substance must be identified. Treatment involves avoiding this substance in the future. Some people may need to change jobs if they cannot avoid the substance at work.If you have a chronic form of this disease, your doctor will give you glucocorticoids (powerful anti-inflammatory medicines).Expectations (prognosis)Most symptoms go away when you avoid or limit your exposure to the material that caused the problem.ComplicationsThe chronic form of this disease may lead to pulmonary fibrosis (a scarring of the lung tissue that often is not reversible).Calling your health care providerCall your health care provider if you develop symptoms of hypersensitivity pneumonitis.PreventionThe chronic form can be prevented by avoiding the material that causes the lung inflammation.ReferencesHoppin JA, Umbach DM, Kullman GJ, et al. Pesticides and other Agricultural Factors Associated with Self-reported Farmer's lung among Farm Residents in the Agricultural Health Study. Occup Environ Med. 2006 Dec 20;[Epub ahead of print].Lacasse Y, Cormier Y. Hypersensitivity pneumonitis. Orphanet J Rare Dis. 2006 Jul 3;1:25.
In pathology, Schaumann bodies are calcium and protein inclusions inside of Langhans giant cells as part of a granuloma.Many conditions can cause Schaumann bodies, including: Sarcoidosis, Hypersensitivity pneumonitis, and Berylliosis. But uncommonly in Crohn's disease and tuberculosis.The body is trying to wall off the granuloma.
Type IV Hyper sensitivity. AKA delayed hypersensitivity. Can be classified into: -contact -tuberculin -granuloma