Etymology: sequoia (tree) + Gk, osis, condition
a type of hypersensitivity pneumonitis common among workers in sawmills where redwood is processed. The antigens are the fungus Pullularia pullulans and species of the genus Graphium, found in moldy redwood sawdust. Characteristics of the acute disease include chills, fever, cough, dyspnea, anorexia, nausea, and vomiting. Symptoms of the chronic disease include productive cough, dyspnea on exertion, fatigue, and weight loss.