<s>[INST] <<SYS>> This is a medical question of type : outlook <</SYS>> What is the outlook for Gerstmann-Straussler-Scheinker Disease ? [/INST] GSS is a slowly progressive condition usually lasting from 2 to 10 years. The disease ultimately causes severe disability and finally death, often after the patient goes into a coma or has a secondary infection such as aspiration pneumonia due to an impaired ability to swallow. </s>