A nebulizer is a medical device used to administer medication in the form of a mist directly into the lungs. It works by converting liquid medication into fine droplets that can be inhaled through a mouthpiece or mask. Nebulizers are commonly used for treating respiratory conditions such as asthma, chronic obstructive pulmonary disease (COPD), and other respiratory infections. They are especially useful for patients who have difficulty using inhalers or require a large dose of medication. The device is typically compact and includes a compressor, medication chamber, and connecting tubes or masks for easy and effective administration of treatments.