Question: how to deal with an irate patient?
Answer: Invest some time. Sometimes a patient's anger is really a cry for help or attention. ... 
Dial up the empathy. When patients become belligerent, it can be hard to stay calm. ... 
Keep your cool. ... 
Mind your body language. ... 
Physically protect yourself. ... 
Legally protect yourself. ... 
Try to end the conversation on a positive note.