Chemo Fog

• Chemo brain is also called chemo fog, according to Mayoclinic.com. It refers to changes or dysfunction in cognition, which some patients suffer during and following treatment.
  
  

Inconclusive Evidence

• Chemo patients claim that chemotherapy messes up their concentration and creates memory problems. However, the Mayo Clinic says there isn't any conclusive evidence that chemotherapy actually causes these problems.
  
  

Confusion and Disorganization

• Trouble finding the right word when talking and trouble concentrating are reported symptoms of chemo brain. Many complain of fatigue and an inability to do two things at once, although they were once able to.
  
  

Memory Problems

• Other symptoms include trouble with visual memory, as in recalling an image or a list of words, and short-term memory issues.
  
  

Temporary

• The Mayo Clinic notes that these issues will generally disappear within 2 years of completing treatment.
  
  

Short Attention Span

• Many complain that their attention span has become short and they have mental fogginess.