Some common walking pneumonia symptoms include: 1  A cough (either a dry cough or a cough that produces just a small amount of clear sputum -- a color in the sputum may happen later). 2  Headache. 3  Sore throat. 4  General feeling of fatigue. 5  Low-grade fever (99° to 100.9°F or 37.3° to 38.3°C). 6  Chills. 7  Runny nose. 8  Ear pain.