Hypersensitivity Pneumonitis: Symptoms

Symptoms of brief or severe (acute) hypersensitivity pneumonitis often occur 6-8 hours after exposure to the foreign substance. Symptoms may include:

• chills,
• fever,
• cough, and
• shortness of breath.

Symptoms of long-lasting (chronic) HP include:

• gradual onset of shortness of breath (especially with activity),
• cough,
• unusual fatigue,
• loss of appetite, and
• unintentional weight loss.