Symptoms of vestibular neuritis include sudden-onset vertigo, balance issues, nausea, difficulty concentrating and dizzy spells, explains Cleveland Clinic. Optic neuritis produces symptoms such as eye pain, vision loss, seeing flashing lights and reduced ability to perceive colors, notes Mayo Clinic. A third form of the condition, called brachial neuritis, causes sudden, severe pain in the upper arm that persists for several days, states Spine-health. After several days of pain, the muscles in the affected arm begin to weaken.
Neuritis is a general term for conditions in which an inflamed nerve causes sensory disturbances, pain or a reduced ability for the nerve to respond to stimuli in the appropriate manner, the Academy for Guided Imagery explains. In the case of vestibular neuritis, the vestibulocochlear nerve of the ear swells, often in response to a viral infection in the ear or elsewhere in the body, reports Cleveland Clinic.
Optic neuritis results when the nerve fibers that send messages from the eye to the brain become inflamed, explains Mayo Clinic. This form of neuritis shares a high correlation with multiple sclerosis, and it is sometimes the first symptom of multiple sclerosis that a patient experiences.
A nerve network called the brachial plexus becomes inflamed in the case of brachial neuritis, states Spine-health. The arm weakness often subsides with time, but permanent paralysis occurs rarely.