This is a type of illness anxiety that involves a fear of losing one’s mind or developing a mental or neurocognitive disorder. This fear can manifest in many different ways, including a fear of postpartum psychosis, schizophrenia, bipolar disorder, and Alzheimer’s disorder, and can have a profound impact on one's daily life. This fear leads to repetitive and intrusive thoughts, which can take many different forms, including a fear of losing control of one's thoughts or actions.