While ADHD and autism share some similar symptoms, they are distinct conditions and have different diagnostic criteria. Some individuals with autism may also have symptoms of ADHD, and vice versa, but not everyone with one condition will have the other. The exact relationship between the two conditions is not yet fully understood and is the subject of ongoing research.
It's important to note that both ADHD and autism are neurodevelopmental disorders that can affect social, behavioral, and cognitive functioning. However, the specific symptoms and severity can vary widely among individuals with either condition.