What is the medical term for a head cold?

The medical term for a head cold is coryza. Coryza refers specifically to the inflammation of the nasal mucous membranes, commonly associated with symptoms such as a runny or congested nose, sneezing, and sometimes a sore throat. This term is often used interchangeably with the common cold, emphasizing the nasal symptoms.

Rhinitis, while closely related, generally refers to any inflammation of the nasal passages and can include various forms, such as allergic rhinitis, which is triggered by allergens. Sinusitis involves inflammation or infection of the sinus cavities and usually presents with additional symptoms like facial pain or pressure, distinguishing it from a simple head cold. Pharyngitis refers to inflammation of the pharynx, presenting primarily with a sore throat, which is not representative of a head cold's main characteristics. Thus, coryza accurately captures the essence of what constitutes a head cold.