Prevalence Rates, Risk Factors and Co-Occurring Conditions
Kathryn Patricelli, MAPrevalence Rate
According to the DSM-5, "the prevalence of specific learning disorder across the academic domains of reading, writing, and mathematics is 5-15% among school-age children across different languages and cultures. Prevalence in adults is unknown, but appears to be approximately 4%."
Risk Factors
There are both environmental and genetic factors that have been identified for the development of specific learning disorder. Environmental factors include premature delivery, very low birth weight, and exposure to nicotine/smoking during prenatal development.
Research has found that a genetic component to specific learning disorder in that it tends to occur in families. The DSM-5 states that the risk of developing specific learning disorder in reading is 4-8 times higher and 5-10 times higher in math for those that have a first degree relative that has the disorder (parent or sibling).
Parents who have literacy problems or dyslexia are much more likely to have a child that has similar problems, which seems to indicate a combination of environmental and genetic factors.
Co-Occurring Disorders
Specific learning disorder has been found to commonly exist with several other disorders and conditions including:
- ADHD
- Communication Disorders
- Developmental Coordination Disorder
- Autism Spectrum Disorder
- Anxiety Disorders
- Depressive and Bipolar Disorders
Having one of these other conditions does not mean that someone cannot also be diagnosed with specific learning disorder, but it can make testing and diagnosis more difficult. It will be important for the clinician to determine if there are 2 separate conditions causing the symptoms or if the non-learning disorder condition is actually causing the academic problems. In that case, the child would not be diagnosed with specific learning disorder since the criteria require ruling out causation from another condition.
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Book & Media Reviews
- Don't Bother Me Mom--I'm Learning!
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- The Nature of Intelligence
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Videos
- Learning Struggles: What Can a Parent Do?
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- Common Learning Disabilities
- Student Voices: What Really Matters to Young Adults With Learning and Attention Issues
- Learning Disabilities, What Are the Different Types?
- How Much Do You Know About Dyslexia?
- Stress Relief Tips for People with Learning Disabilities
- Making Friends When You Have a Learning Disability
- Parenting a Child with Dyslexia: A Mom Shares Her Story
- Learning About Learning Disabilities
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- What is dyslexia?
- The gift of dyslexia
- Children's Communication Challenges: Is it Attention, Language or Both?
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- What Causes Learning Disabilities?
- What Is an IEP?
- How Do I Request an Evaluation?
- Steps Parents Should Take Once Their Child is Identified with A Learning Disability
- What Is Dyslexia?
- What Is Dyscalculia?
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More Information
- An Interview with Steven Richfield, PsyD, on the Parent Coach
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