The job of doctors is to save lives and help people get better.
But if someone is suffering from extreme pain with no hope of recovery - should it ever be allowed for them to help them end their life?
This week Tony Nicklinson, a severely disabled man, went to court because he wants doctors to do exactly that.
It is illegal in the UK for a doctor to end a person's life, but after being paralysed for seven years, Tony wants the courts to make an exception.
Watch Ricky's report to find out more about this difficult case.