SPD stands for sensory processing disorder, and both autism and SPD are behavioral disorders, as well as neurodevelopmental disorders. With autism, for example, the children have difficulty with social interaction, repetitive and restricted behavior, and verbal and non --verbal communication.
Children with autism also tend to lack the ability to understand facial expressions. Children begin to display signs of autism as young as three years old. Sensory processing disorder is a disorder where a child is unable to utilize incoming sensory information to perform specific tasks.
These children typically have difficulty performing simple responsibilities, such as putting on clothes, practicing hygiene, bathing, and drinking fluids. They also tend to be unresponsive to sounds and touch. There is a glitch within the sensorimotor pathway. Many autistic children have SPD, but those with SPD may not always be autistic.