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Thumb-Sucking - Exams and Tests

Thumb-sucking behavior before age 4 is normal and does not require medical tests or evaluation. Children who continue to suck their thumbs after age 4 or 5 may need a:

Dental exam, to identify any irregularities of the teeth, bite, or jaw.
Speech evaluation, if word pronunciations are affected or other irregularities develop.

If the habit is severe and appears to be related to other behavioral disorders, such as anxiety, or a reaction from a traumatic event, a psychological evaluation may be needed.

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WebMD Medical Reference from Healthwise

Last Updated: September 12, 2008

This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.