A lisp is a speech impediment that specifically relates to making the sounds associated with the letters S and Z. Lisps usually develop during childhood and often go away on their own. But some persist and require treatment. What Causes a Lisp? There are no known causes of lisps.

Lisps can be caused by a variety of factors, including: Learning to pronounce sounds and syllables incorrectly. Problems with a person’s jaw alignment. A tongue thrust, where the tongue protrudes between a person’s teeth.

There is no known cause of a lisp. The following things have traditionally been linked to lisps, but there is no strong evidence: The position or movement of the child’s jaw, teeth, and tongue. Long term use of dummies or bottles.

The causes of lisping are multifaceted, with anatomical factors like tongue thrust and misaligned jaw or learned behaviors from prolonged pacifier use and thumb-sucking potentially contributing to the development of the condition.

A cause of a lisp can be identified as either psychological or physiological. This is because there may be a medical reason for someone to have a lisp, or it may be more to do with stress or trauma.