The document discusses mastoiditis, an infection of the mastoid process behind the ear. It begins by defining the mastoid process and mastoiditis. Signs and symptoms include ear pain, swelling behind the ear, hearing loss, and discharge from the ear. Diagnosis involves examinations, imaging like CT scans, and lab tests. Treatment involves antibiotics, ear drops, analgesics, and potentially surgical procedures like mastoidectomy if the infection spreads. Nursing care focuses on pain management, administering medications, providing comfort, and addressing risks like infection, impaired communication, and balance issues.