No one test can diagnose dyslexia. Rather, parents, reading specialists, teachers, doctors and other professionals often look for signs of the condition and may administer further reading tests for confirmation of the diagnosis, according to WebMD.
Dyslexia refers to reading difficulties signified by the inability to identify speech sounds and how they relate to letters and words, notes WebMD. Most often occurring in childhood, dyslexia can be diagnosed at any age. Often a complete medical assessment is ordered to ensure that other medical, social or behavioral influences are not to blame. Family history has been identified as a risk factor for dyslexia. Once testing is administered, a treatment plan, often including special education assistance, can be compiled.
Causes of dyslexia are varied, but scientists have identified differences in the left hemisphere of the brain of dyslexics, WebMD reports. Classified as a learning disability, dyslexia produces symptoms, such difficulty with pronunciation and slow vocabulary development, that are often detected at school or by parents.
As of 2014, there is no permanent cure for dyslexia, but the condition does not impact a person's intelligence, according to Mayo Clinic. Early detection and intervention are the two single most important treatments. Most sufferers learn to achieve in school through reading practice, tutoring and other reading interventions.