Tactile hypersensitivity, also called tactile over-sensitivity, is often but not always associated with ASD. It appears in mild to extreme cases and basically means that touch can be confused as pain or emotional overstimulation, both of which can overwhelm the recipient, both of which will cause them to avaoid touch whenever possible. If this is your child, KidCompanions.com has some interesting reading. http://kidcompanions.com/tactile-sensitivity-what-it-is-and-the-common-signs/
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