10 Types of Respiratory Infections

9. Croup

Croup is a viral infection that causes the airways below the vocal cords to swell. Common in babies and toddlers, the condition leads to a harsh, barking cough. It can also cause heavy breathing, fever, difficulty swallowing, and drooling. Fortunately, most cases are mild, and treatment is rarely necessary. However, some situations may warrant immediate medical attention—such as when the child experiences severe breathing difficulties.

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