|
Tumors: – Small cell lung cancer – Mesothelioma – GI malignancy – Pancreatic carcinoma – Lymphoma – Sarcoma |
|
Pulmonary causes: – Pneumonia – Tuberculosis – COPD |
|
Intracranial causes: – Tumors – Subdural hematoma – Head trauma – Meningitis |
|
Drugs |
|
Miscellaneous causes: – HIV – Severe nausea – Pain – Idiopathic |
|
COPD, chronic obstructive pulmonary disease; GI, gastrointestinal; HIV, human immunodeficiency virus. |