Examples of problems with language and speech development include the following:
American Speech-Language-Hearing Association. (2023). Speech sound disorders: Articulation and phonology. https://www.asha.org/practice-portal/clinical-topics/articulation-and-phonology/
U.S. Department of Health & Human Services. (2022, May 11). Language and speech disorders in children. Centers for Disease Control and Prevention. https://www.cdc.gov/ncbddd/developmentaldisabilities/language-disorders.html