Patients Suffering from Congenital Insensitivity to Pain Frequently Die Due

Multiple Choice

Patients suffering from congenital insensitivity to pain frequently die due to injuries they did not know they had or perform risky behaviors that would severely hurt other people. This disease can be caused by ______.

A) mutated, nonfunctioning sodium channels in pain neurons
B) depleted endorphin levels
C) mutation of a gene, which results in significant loss of myelinated neurons
D) decreased levels of opioids