Social (pragmatic) communication disorder (SCD) and autism are different conditions, but some of their symptoms overlap. People with SCD have difficulty with verbal and nonverbal skills. They may not know when to make eye contact or respond to others during conversation, or they may consistently misunderstand sarcasm and irony. Although some autistic people have these issues as well, autism has additional symptoms, including repetitive behavior, focused interests, and sensory processing differences. In order for someone to be diagnosed with social communication disorder, autism needs to be ruled out.