What are some of charlie's symptoms flowers for Algernon?

In "Flowers for Algernon," Charlie Gordon exhibits several symptoms related to his intellectual disability, including difficulty with reading, writing, and understanding social cues. As he undergoes an experimental surgery to increase his intelligence, he initially experiences excitement and rapid cognitive growth, but later faces profound emotional turmoil, alienation, and confusion as his mental state fluctuates. Eventually, he suffers from memory loss and cognitive decline, highlighting the fragility of his newfound intelligence. These symptoms reflect the complexities of human intelligence and the impact of social relationships on self-identity.