The following are the most important diseases or complications that may be contributed to by West Nile fever:
Eyes and eye appendages (H00-H59).
- Optic neuritis (optic neuritis).
Cardiovascular system (I00-I99)
- Myocarditis (inflammatory disease of the heart muscle) (rare).
Liver, gallbladder, and bile ducts-pancreas (pancreas) (K70-K77; K80-K87).
- Hepatitis (inflammation of the liver) (rare).
Musculoskeletal system and connective tissue (M00-M99).
- Paralysis (signs of paralysis).
Psyche – nervous system (F00-F99; G00-G99)
- Encephalitis (inflammation of the brain) – often results in late sequelae (50% of cases); is associated with increased lethality (mortality relative to the total number of people with the disease) in people > 70 years of age (15-40%)
- Meningitis (meningitis).
- Polyradiculitis (inflammation of multiple nerve roots).
Symptoms and abnormal clinical and laboratory findings not elsewhere classified (R00-R99).
- Ataxia (gait disorder)
