The answers to the questions are simple, but many won’t like them.įirst off, what is Molerat Disease? Well, if you have it then you probably remember Vault 81. Are you pushing twenty or more hours in Fallout 4 and just noticed a little indicator on your Pip-Boy that says you have something called Molerat Disease? You’re not along, this pesky sickness has infected a large portion of the Fallout 4 player population, but many aren’t sure what it is or how to cure it.