Pneumonia symptoms often begin with fever, chills, and a persistent cough that may produce phlegm. Patients commonly experience shortness of breath, chest pain during breathing or coughing, and fatigue. Other signs include sweating, nausea, and confusion, especially in older adults. Rapid breathing and a fast heartbeat may also occur. In severe cases, oxygen levels drop, requiring urgent care. Early diagnosis is crucial to prevent complications. Doctors may prescribe antibiotics such as ceftriaxone injection for bacterial pneumonia. Seek medical attention promptly if symptoms worsen or breathing becomes difficult, as timely treatment improves recovery outcomes significantly and reduces risk of hospitalization and serious complications.