Pain Modulation Mechanisms in ASD Adults.

Mulder et al. (2020) tested pain modulation in verbally fluent adults with autism. They used heat pulses and cold water to see if the brain dampens or boosts pain signals differently than in typical adults.

Each adult sat in a lab while machines delivered safe but noticeable heat or cold. The team measured pain ratings and pain reflexes.

Pain modulation worked the same for both groups. On average, adults with autism did not feel more or less pain than controls.

Yet their pain scores were more spread out. Some felt almost no pain, others felt a lot, while controls clustered near the middle.

Ben-Sasson et al. (2009) meta-analysis once showed big sensory differences in kids with autism. The new null finding updates that story for pain in adults.

Thaler et al. (2018) also found intact self-pain in ASD adults, but those adults underestimated pain in others. Together the papers say, "Your client feels pain normally, yet may misread pain in peers."

Bone et al. (2015) saw widened spatial windows for touch-vision in ASD adults. Mulder et al. (2020) now shows widened pain rating spread. Both point to more variable sensory filters, not outright loss.

Expect wide pain swings in high-functioning adults with autism. One client may tolerate a flu shot without flinching; another may find the same shot intense. Always ask for individual pain reports instead of assuming hyposensitivity. Use clear 0-10 scales and watch for non-verbal cues like muscle tension or breathing changes. Document each client's baseline so medical or dental staff can plan appropriate supports.