Brain fog, also known as mental fog or clouding of consciousness is a term used in medicine denoting an abnormality in the regulation of the overall level of consciousness that is mild and less severe than a delirium. The sufferer experiences a subjective sensation of mental clouding described as feeling “foggy”. Often exhibited through symptoms of:

  • Poor short term memory
  • Difficulty learning new things
  • Poor mental stamina and concentration – difficulty reading a book or following a film or movie or following a line of argument
  • Difficulty finding the right word
  • Thinking one word, but saying another