This drug costs $84,000

The first thing Philip Mason noticed was the hair loss. The 73-year-old retiree, a former computer programmer, began shedding hair from his arms, legs, everywhere on his body. "It just all came right off," he said.

After the hair loss came weight loss; Mason dropped from 150 to 125 pounds. He felt weak and sick. Mason, who is blind and already used a white cane to get around, began having falls. He switched to a walker for more stability.

Mason went to the doctor and discovered he had Hepatitis C....