Anger shows up in one's behavior as sarcasm, disrespect, rudeness or cruelty.
It is also evident in a person's emotions when he or she gets impatient, upset and crabby over little things. Anger affects a person's physical and mental well-being. Difficulty sleeping, sleeping more than usual, grinding teeth while sleeping, fatigue, clenched jaws, sore or stiff neck, boredom, apathy, depression, digestive disorders, overeating or loss of appetite, or drug and alcohol abuse may be symptoms of unexpressed anger. This is called repressed anger. We should get angry at injustice, mistreatment or abuse.