Acute bronchitis is often caused by the same [[virus]]es that cause [[common cold|cold]]s. It usually starts as a [[sore throat]], runny nose or sinus infection, then spreads to the airways. It can cause a lingering dry cough, but it usually goes away on its own. | Acute bronchitis is often caused by the same [[virus]]es that cause [[common cold|cold]]s. It usually starts as a [[sore throat]], runny nose or sinus infection, then spreads to the airways. It can cause a lingering dry cough, but it usually goes away on its own. |