(HealthDay News) -- Although initial symptoms of bronchitis may seem like a cold, they will continue to worsen until you see a doctor for treatment.

Here are some warning signs of bronchitis, courtesy of the U.S. National Library of Medicine:

• Persistent cough that worsens at night; changes from dry to a productive, hacking cough; and lasts for about two weeks.
• Difficulty breathing, wheezing noises while breathing, or a tightness in the chest.
• A rattling sound in the chest.
• Fever.
• Sore throat or a tickle in the throat.