About Aphasia Aphasia FAQs Does Aphasia Affect a Person’s Intelligence? No. There are many types of aphasia. Some people have difficulty speaking while others may struggle to follow a conversation. In some people, aphasia is fairly mild and you might not notice it right away. In other cases, it can be very severe, affecting speaking, writing, reading, and listening. While specific symptoms can vary greatly, what all people with aphasia have in common are difficulties in communicating.