Conversation so far:
What was Phineas Gage recovery like?
Despite Phineas Gage own optimism, Gage's convalescence was long, difficult, and uneven
Did Phineas Gage fully recover?
hough a year later some weakness remained, Harlow wrote that physically, the recovery was quite complete during the four years immediately succeeding the injury“
What happened to Phineas Gage next?
On April 1849, Phineas Gage returned to Cavendish and visited Harlow, who noted at that time loss of vision of the left eye, a large scar on the forehead

Question: What other symptoms or problems did he experience?
Self-contained rewrite: What other symptoms or problems did Phineas Gage experience?