Everyone Healthy Library
Hypersensitivity Pneumonitis
Also Known As: Extrinsic Allergic Alveolitis; Farmers Lung
Condition / disease reference page from the Everyone Healthy database.
! Seek urgent medical care if warning signs appear
Some health conditions or symptoms can become urgent. Use this page for education, but seek help quickly if warning signs are present.
Get urgent medical care now if there is any severe, sudden, rapidly worsening or worrying symptom, especially:
- chest pain, pressure or pain spreading to the arm, jaw or back
- trouble breathing, blue lips, severe wheeze or choking
- stroke-like symptoms such as face drooping, arm weakness or speech trouble
- collapse, fainting, seizure, confusion or extreme drowsiness
- severe bleeding, black stools, vomiting blood or major injury
- severe allergic reaction, swelling of the face/throat or widespread rash with breathing trouble
- severe abdominal pain, severe headache, stiff neck or sudden vision change
- signs of severe dehydration, sepsis, high fever with worsening illness, or symptoms in a baby/young child that concern you
Connected health information
Explore this condition in a clear order
Linked signs and symptoms
7Each sign/symptom opens its own page and links back to related conditions.
Linked drugs / medications
2Medication information is educational only. A doctor or pharmacist should advise whether any medicine is appropriate.
Treatments, therapies and supportive options
1Grouped by treatment type. These are educational database links, not personal treatment recommendations. Evidence labels are shown only where stored in the EH database.
Linked diagnostic tests and investigations
13These are pulled from both EH diagnostic-test link tables, including the older large test-link table.
- Alpha-1 Antitrypsin (AAT) Concentration
- Carbon Dioxide Total Content (TCO2)
- Cerebrospinal Fluid Protein Concentration
- Expiratory Reserve Volume (ERV)
- Fibrin Degradation Products (FDPs, Fibrin Split Products, FSPs, Fibrin Breakdown Products, Fbps)
- Inspiratory Capacity (IC)
- Maximum Voluntary Ventilation (MVV)
- Peak Expiratory Flow Rate (PEFR)
- Protein Electrophoresis (Blood, Serum Protein)
- Residual Volume (RV)
- Spirometry
- Total Lung Capacity (TLC)
- Vital Capacity (VC)
Biological markers/agents
13This visual map shows biological markers/agents reported as increased or decreased with this condition. These are educational relationships only; test results must be interpreted by a qualified clinician because ranges vary by lab, method, age, sex and clinical context.
Often increased
5- Alpha-1 Antintrypsin (AAT)Reference range exampleAdult ( > 16y): 90–215 mg/dLLinked diagnostic testsAlpha-1 Antitrypsin (AAT) Concentration
- Carbon Dioxide Total Content (TCO2)Reference range exampleInfant (0 - 1y): 20–27 mEq/L; Newborn (0 - 1month): 13–21 mEq/LLinked diagnostic testsCarbon Dioxide Total Content (TCO2)
- Cerebrospinal Fluid Total ProteinReference range exampleAdult ( > 16y): 15–45 mg/dL; Child (< 10y): 15–70 mg/dLLinked diagnostic testsCerebrospinal Fluid Protein Concentration
- Fibrin Split ProductsReference range exampleAll: 0–1 mg/dLLinked diagnostic testsFibrin Degradation Products (FDPs, Fibrin Split Products
- Gamma Globulin (Blood, Serum)Reference range exampleAll: 0.8–1.7 gm/dLLinked diagnostic testsProtein Electrophoresis (Blood, Serum Protein)
Often decreased
8- Expiratory Reserve Volume (ERV)Reference range exampleAdult ( > 16y), Female: 850–1,300 mL; Adult ( > 16y), Male: 1,000–1,500 mLLinked diagnostic testsExpiratory Reserve Volume (ERV)
- Forced Expiratory Flow Between 25% and 75% of FVC (FEF25-75)Reference range exampleAll: 60–100 %Linked diagnostic testsSpirometry
- Inspiratory Capacity (IC)Reference range exampleAdult ( > 16y), Female: 2,600–3,200 mL; Adult ( > 16y), Male: 3,000–3,500 mLLinked diagnostic testsInspiratory Capacity (IC)
- Maximum Voluntary Ventilation (MVV)Reference range exampleAdult ( > 16y), Female: 80–180 L/minute; Adult ( > 16y), Male: 140–180 L/minuteLinked diagnostic testsMaximum Voluntary Ventilation (MVV)
- Peak Expiratory Flow Rate (PEFR)Reference range exampleAdult ( > 16y), Female: 410–450 L/minute; Adult ( > 16y), Male: 540–590 L/minuteLinked diagnostic testsPeak Expiratory Flow Rate (PEFR)
- Residual Volume (RV)Reference range exampleAdult ( > 16y): 1,200–1,600 mL; Adult ( > 16y), Female: 850–1,300 mLLinked diagnostic testsPostvoid Residual Volume Test, Residual Volume (RV)
- Total Lung Capacity (TLC)Reference range exampleAdult ( > 16y), Female: 4,600–5,200 mL; Adult ( > 16y), Male: 5,800–6,200 mLLinked diagnostic testsTotal Lung Capacity (TLC)
- Vital Capacity (VC)Reference range exampleAdult ( > 16y), Female: 3,500–4,000 mL; Adult ( > 16y), Male: 4,500–5,000 mLLinked diagnostic testsVital Capacity (VC)
Introduction / full article
Hypersensitivity Pneumonitis
The main information article for this record is not yet available in the database.