The doctor may offer other treatment options, depending on the patient’s age, symptoms, severity of the condition, and even medical history. Oral or injectable medication may be appropriate. Additional testing may also be done, such as allergy testing, blood test to check oxygen and carbon dioxide levels in the blood, chest x-ray, computerized tomography (CT) scan
, or lung function test
. Intubation may be necessary. Intravenous antibiotics may also be considered.