Sore throat
Sore throat [2], also called pharyngitis, is a symptom of many respiratory conditions including walking pneumonia. It is caused by an inflammation of the pharynx and fauces (the passage between the pharynx and the back of the mouth).
If you have a sore throat, swallowing both solid and liquid foods might prove difficult. Depending on the severity, even talking may cause pain. Your throat may also feel unusually dry or itchy. This symptom is often not enough to make a diagnosis of atypical pneumonia.
Persistent cough
Fluids and pus may fill the air sacs during a pneumonia infection. If you have walking pneumonia, you will develop a persistent cough that is usually dry [3], but it may also contain phlegm from the mucus in your respiratory tract. The cough typically lasts more than one week.