The percentage of the population that displays symptoms of dyslexia is estimated to be between 15% and 20%. Many sources indicate that while 3% to 7% of the population may have a formal diagnosis of dyslexia, up to 15–20% of people show some signs or symptoms of dyslexia such as slow or inaccurate reading, poor spelling, or writing difficulties. This broader estimate includes individuals who may not meet the strict diagnostic criteria but still struggle with related symptoms.
In summary:
- About 3-7% have a formal diagnosis of dyslexia.
- Up to 15-20% display dyslexia symptoms to some degree.
- Symptoms can include reading and writing difficulties even if not formally diagnosed.
This range reflects the variable severity and diagnostic criteria used for dyslexia identification.