Is meningitis a frightening disease? Meningitis can be very frightening if the condition progresses quickly, or if it is not diagnosed and treated in a timely manner. In severe cases, it can be life-threatening. Many patients often suffer from after-effects following recovery, such as decreased intelligence, dementia, aphasia, paralysis, etc., significantly impacting the quality of life. Therefore, meningitis is a quite frightening disease, and patients should actively cooperate with doctors for treatment to save lives and minimize or reduce the occurrence of after-effects.