No, ROHHAD is not at all contagious. While the medical community is still searching for what causes ROHHAD, it is not caused by an infectious agent (bacteria, virus, or fungus) that can be spread from one person to another. The best guess right now is that ROHHAD may be caused by a genetic defect or mutation although at this point in time, no specific gene has been identified. The possibility of immune system involvement is also being considered.