Is a learning disability that is marked by difficulty in recalling words, names, numbers, etc. from memory. The real problem stems from the fact that the words that they can not remember are essential, as they are needed for oral or written expressive language. The person may provide a detailed description of the word in question but is unable to recall its exact name. Dysnomia is often misdiagnosed as expressive language disorder. If your child is exhibiting any of these symptoms, take them to see a neurologist as soon as you can.