Chemobrain refers to a syndrome (a bunch of symptoms) that some people
get when they take chemotherapy drugs. A more formal name is Chemotherapy-Related Cognitive Dysfunction. Another informal name is "chemo fog". Chemotherapy is a systematic treatment,
meaning it goes all over the body. An unfortunate side effect of many
chemotherapy agents is a diminshment in mental energy and acuity. As a
stimulant, modafinil has found some interest from doctors for treatment
of this condition.
Management of Cognitive Changes in Oncology Patients
.
A phase III clinical trial of modafinil on people taking the chemotherapy drug doclataxel found "modest" benefit for the fatigue those patients experience.
Mayo Clinic on Chemo Brain.
