By Rebecca L. Castillo, MD

Answer:
Pneumonia often starts like a simple cold, but the symptoms quickly become more serious. Watch out for:

• High fever or chills
• Persistent cough with phlegm
• Fast or difficult breathing
• Chest pain when breathing
• Weakness or confusion (especially in the elderly)

Seek medical consultation immediately if breathing becomes difficult, fever lasts beyond 48 hours, or the patient is elderly, pregnant, or has heart/lung problems. Early treatment saves lives.