Forrest Gump had an intellectual disability, which was a case of autism, and he also had physical disabilities. His leg had braces in his childhood due to neural problems or polio.
Gump was forced to wear leg braces in his childhood, preventing him from running or walking quickly.
Later in his life, he learned he didn’t need leg braces anymore and could run or walk to where he wanted.
Forrest Gump scored a low score of 75 on the IQ test, proving his intellectual disability. Gump’s intellectual disability had prevented him from attending public schools until his mother convinced a school principal to let him attend ordinary school education.