What Is the Medical Definition of Brain Fog?

Brain fog is not a disease itself but a term doctors use when someone feels like they are having a hard time thinking clearly. People with brain fog might feel fuzzy, forgetful, or slow when trying to make decisions. They can have trouble focusing on a task or remembering things, which can affect school, work, or daily life. Research has shown that brain fog can occur in many different conditions. Some people report it after an illness like COVID-19 or with conditions that cause fatigue and stress on the body. It might feel like a cloud that makes everything seem a bit mixed up. Brain fog is mentioned in recent studies that work to better define what it means, showing that it can be common and may affect people in various ways. Sometimes, doctors look at brain fog as a sign that something else might be happening in the body. This helps them decide how to care for the person. Knowing about brain fog helps doctors and patients work together to find ways to feel better.