A common part of ASD is sensory integration issues. You can also have Sensory Processing Disorder (SPD) or Sensory Integration Dysfunction (SID) without being autistic. Most people have sensory issues, but they usually don't get in your way. They just make people like and dislike things. If the noise hurts so that you can't function, if the flicker of lights drives you mad, or wearing clothes is just too painful to bear, you might be in the realm of SPD. Check out the SPD Foundation!
SPD is not accepted as a problem by everyone. We struggle with explaining SPD to our school OT. SPD kids are often labeled misbehavers and trouble makers, so it is important that this get recognized and understood, and these kids get the accommodations they need to function. It's amazing with an incandescent light bulb and a seat cushion can do for an SPD child.