Otitis is a general term for infection or inflammation of the ear.
Ear infection; Infection – ear
Otitis can affect the inner or outer parts of the ear. The condition is classified according to whether it occurs suddenly and for a short time (acute) or repeatedly over a long period of time (chronic).
Pier GB. Pseudomonas and related gram-negative bacillary infections. In: Goldman L, Schafer AI, eds. Goldman’s Cecil Medicine. 24th ed. Philadelphia, PA: Saunders Elsevier; 2011:chap 314.