ADHD involves a persistent pattern of inattention and/or hyperactivity-impulsivity across settings; Specific Learning Disorder involves a specific, persistent difficulty in reading, writing, or math despite adequate instruction and average intelligence.
Both must be present from an early developmental period, though Specific Learning Disorder often becomes clinically apparent once formal academic instruction begins and expected skills fail to develop.
Both require symptoms/difficulties persisting at least 6 months despite targeted intervention (for Specific Learning Disorder) or across multiple settings (for ADHD).
ADHD's inattentive symptoms can look like a learning problem (missed instructions, careless errors) without a true underlying skill deficit; Specific Learning Disorder's frustration and avoidance can look like inattention without true ADHD.
Both cause significant academic impairment; distinguishing them (or recognizing both, since they frequently co-occur) is essential for appropriately targeted intervention.
A specific academic skill deficit that is fully explained by inattention alone (i.e., resolves with attention treatment) is not Specific Learning Disorder; conversely, academic struggle from a true skill-specific deficit should not be mislabeled as inattention.
The key differential question is whether academic difficulty is skill-specific (reading, writing, or math specifically, despite adequate attention when engaged) or attention-specific (inconsistent performance driven by inattentive symptoms across all subjects and non-academic contexts alike).
These two are frequently comorbid, which can lead clinicians to attribute all academic struggle to whichever diagnosis was made first, rather than assessing each independently.
A child who reads fluently but loses points for skipped questions and careless errors across all subjects points to ADHD; a child who reads slowly and inaccurately despite full attention and effort points to Specific Learning Disorder.
| Feature | Attention-Deficit/Hyperactivity Disorder (ADHD) | Specific Learning Disorder |
|---|---|---|
| Core deficit | ADHD: attention regulation and/or hyperactivity-impulsivity | Specific Learning Disorder: a specific academic skill (reading, writing, or math) |
| Cross-setting pattern | Impairment present in academic and non-academic settings alike | Impairment specific to the academic skill domain |
| Comorbidity | Frequently co-occurs with Specific Learning Disorder | Frequently co-occurs with ADHD |
A neurodevelopmental pattern of inattention and/or hyperactivity-impulsivity that is inconsistent with developmental level, present in multiple settings, with several symptoms evident before age twelve.
Persistent difficulties learning and using academic skills (reading, written expression, and/or mathematics), with performance well below what's expected for age, present despite adequate instruction, and not better explained by intellectual disability, uncorrected sensory problems, or other neurological/mental conditions.