I am sorry that your son is going through this pain. I am glad that you found us for further information. Please visit our Hepatitis C page here for detailed information https://www.empowher.com/condition/hepatitis-c.
Death from Hepatitis C is very uncommon. He should be on medications and making sure that he continues to use his medication and of course emotional support is important. Let me know if you have further questions. The above link should certainly provide you with a lot of information.
Best of luck,