Most vehicles include an ESC OFF button to disable Traction Control when the vehicle is stuck in fresh snow, mud or sand; or is being operated: 1  with snow chains; 2  off road in deep snow or sand; or. 3  with the compact spare tire.
Mastoiditis is a serious bacterial infection that affects the mastoid bone behind the ear. It's usually more common in children, although adults can also sometimes be affected. The mastoid bone has a honeycomb-like structure that contains air spaces called mastoid cells. The mastoid cells help maintain the air space in the middle ear. Mastoiditis can develop if the mastoid cells become infected or inflamed, often as a result of a persistent middle ear infection (otitis media). This can cause the porous bone to break down.
From Wikipedia, the free encyclopedia. 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 cell system inside the mastoid process.The mastoid process is the portion of the temporal bone of the skull that is behind the ear which contains open, air-containing spaces.ome common symptoms and signs of mastoiditis include pain, tenderness, and swelling in the mastoid region. There may be ear pain (otalgia), and the ear or mastoid region may be red (erythematous).