A state of extreme arousal, increased tension , and irritability . See also anxiety, stress, and tension .
Extreme agitation can lead to confusion , hyperactivity , and outright hostility.
Agitation can come on suddenly or gradually. It can last for just a few minutes or for weeks and even months. External stimuli , pain, stress , and fever all increase agitation. There may be other causes of agitation. This list is not all inclusive, and the causes are not presented in order of likelihood.