Mastoiditis is an infection of part of the large bone behind your ear. It’s caused by untreated middle ear infections. Symptoms include ear pain and drainage.

Oct 21, 2025 · Mastoiditis is a serious bacterial infection that affects the mastoid process, or the bone and air cells surrounding the inner and middle ear. Learn more.

May 2, 2025 · Mastoiditis is a severe complication of otitis media characterized by infection of the mastoid bone. Symptoms of mastoiditis include tenderness, redness, or swelling behind the …

Mastoiditis - Learn about the causes, symptoms, diagnosis & treatment from the MSD Manuals - Medical Consumer Version.

May 2, 2024 · Mastoiditis is most often caused by a middle ear infection (acute otitis media). The infection may spread from the ear to the mastoid bone. This bone has a honeycomb-like …

Mastoiditis is the result of an infection that extends to the air cells of the skull behind the ear. Specifically, it is an inflammation of the mucosal lining of the mastoid antrum and mastoid air …

Sep 12, 2023 · WebMD discusses the symptoms, causes, and treatment of mastoiditis, a sometimes serious bacterial infection of a bone behind the ear.

Dec 18, 2025 · Mastoiditis is defined as the inflammation and infection of the mastoid process, which is the bony prominence located behind the ear. This condition often occurs when an ear …

Dec 9, 2025 · Care guide for Mastoiditis. Includes: possible causes, signs and symptoms, standard treatment options and means of care and support.

Mar 28, 2018 · As the mastoid is contiguous to and an extension of the middle ear cleft, virtually every child or adult with acute otitis media (AOM) or chronic middle ear inflammatory disease …