What is Sensory Processing Disorder?
Sensory Processing Disorder (SPD) makes it difficult for a person to understand information they receive from their senses. If you take a minute to think about it, everything you know about the world comes through your senses. SPD causes a person’s body to misinterpret this sensory information causing them to respond inappropriately to ordinary sensory experiences.
When our senses are integrated properly they protect us and allow us to enjoy our surroundings. Who doesn’t enjoy smelling fresh baked cookies or leave a building when they smell smoke? The five senses most of us are familiar with are:
- Vision -visual perception
- Hearing – auditory perception
- Touch – tactile perception
- Smell – olfactory perception
- Taste – oral perception
Two senses we may not be familiar with are:
- Vestibular – our sense of balance
- Proprioceptive – our muscles movement
When coordinated properly our senses work together to help us understand and maneuver within our environment. For example to open a door:
- We look at it- visual perception.
- We place our hand on the doorknob- visual and tactile, and proprioceptive perception.
- We squeeze the doorknob (not to hard or to soft) and turn it- tactile, proprioceptive perception.
- We pull open the door (not to hard or to soft) – vestibular, proprioceptive, visual, and tactile perception. (If the door has a squeaky hinge we hear that as we are opening it – auditory perception.)
- We walk through the doorway, stepping over the door jam- visual, vestibular, and proprioceptive perception.
A person with SPD may:
- Bump into the door.
- Slam the door.
- Hit their self with the door.
- Trip or bang into the doorway as they walk through.
- Be unable to open the door.
If you believe your child may have SPD have them evaluated by an Occupational Therapist trained in Sensory Processing Disorder.

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