Headache Disorders

Common conditions characterized by persistent or recurrent headaches (see HEADACHE). Headache syndrome classification systems may be based on etiology (e.g., VASCULAR HEADACHE, post-traumatic headaches, etc.), temporal pattern (e.g., CLUSTER HEADACHE, paroxysmal hemicrania, etc.), and precipitating factors (e.g., cough headache).

Headache

Pain in the cranial region that may occur as an isolated and benign symptom or as a manifestation of a wide variety of conditions including SUBARACHNOID HEMORRHAGE; CRANIOCEREBRAL TRAUMA; CENTRAL NERVOUS SYSTEM INFECTIONS; INTRACRANIAL HYPERTENSION; and other disorders. In general, recurrent headaches that are not associated with a primary disease process are referred to as HEADACHE DISORDERS (e.g., MIGRAINE).

Syndrome

A symptom complex of unknown etiology, that is characteristic of a particular abnormality.

Classification

The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.

Cough

A sudden, audible expulsion of air from the lungs through a partially closed glottis, preceded by inhalation. It is a protective response that serves to clear the trachea, bronchi, and/or lungs of irritants and secretions, or to prevent aspiration of foreign materials into the lungs.