Although he is unable to speak coherently and has been diagnosed with autism spectrum disorder, 18-year-old Andrew can produce intricate and detailed drawings of scenes he has viewed only once. Andrew illustrates a condition known as syndrome.

Savant syndrome

Explanation:

18-year-old Andrew has SAVANT SYNDROME.

Savant syndrome is a condition in which someone with mental disorder or development have some kind of rare talent or abilities. Although savant syndrome are sometimes caused by a change in gene's or when part of the brain is damaged.

Some affected person with autism spectrum disorder like Andrew may exhibit special skills or talent in some field like, mathematics, drawing, acting or music.

Example such person may be able to sing a song within a second or minutes of listening to that songs.

People with SAVANT SYNDROME are special in their own ways despite their disorder and they are often intelligent.