What can make people angry?

The most common factors that make people angry are: 
Grief - losing a loved one. 
Sexual frustration 
Rudeness 
Tiredness 
Hunger 
Pain 
Withdrawal from drugs or some medications 
Some physical conditions, such as pre-menstrual syndrome 
Physical illness 
Mental illness 
Alcohol, some drugs, alcohol abuse, drug abuse
Injustice 
Being teased or bullied 
Humiliation 
Embarrassment 
Deadlines 
Traffic jams 
Disappointment 
Sloppy service 
Failure 
Infidelity 
Being told you have a serious illness 
Anger can make you ill
When we are angry the body releases stress hormones, such as adrenaline, noradrenaline and cortisol. The heart rate, blood pressure, body temperature and breathing rate increase. Regular episodes of anger can eventually make people ill. 
Oher harms.