Whenever diagnosed with any serious disease or sickness, PLEASE get a second opinion. Do it for YOUR HEALTH.
I have heard it many times(my dad was the latest victim), people trust the first docotor and initiate treatment only to find out after a second opinion that the first doctor misdiagnosed their situation.
It can be very dangerous(to your liver, kidneys and other organs) to take unnecessary medication. Could lead to dialysis.
You owe it to yourself. Have caution. It's like buyer beware.