Is it possible that a while have a language impairment in the absence of other medical diagnoses?

Specific Language: Impairment is a highly inheritable disorder caused by alterations in multiple specific genes. Early delays in expressive language, often with delayed receptive language,persist past age 4 & confer very high risk of dyslexia. Intellectual Disability, Autistic Spectrum Disorder, brain damage, hearing loss, psychological trauma, etc. MUST be absent for SLI to be diagnosed, by definition.