"Fluency" refers to the forward flow of speech. Difficulty with speech fluency is also called Stuttering. Stuttering is a neurodevelopmental difference. Please read the links below for more information.
News Article: The Neuroscience of Stuttering*
*This article refers medications being researched as a treatment for stuttering. Mrs. Wilson is not advocating for the use of medications by posting this article*
The link below leads to an online catalogue of handouts about stuttering in English and Spanish. These handouts are provided by Dr. Scott J. Yaruss from his website (www.stutteringtherapyresources.com):