Glossary

Searchable terminology from accessibility, web standards, and related fields.

21 results found in disabilities.

ADHD (Attention Deficit Hyperactivity Disorder, ADD, Attention Deficit Disorder)
A neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with functioning and development. ADHD affects working memory, executiv…
Attention Deficit Hyperactivity Disorder (ADHD)
A neurodevelopmental disorder characterized by persistent patterns of inattention, hyperactivity, and impulsivity that interfere with functioning and development. ADHD affects approximately 7.6% of ch…
Auditory Processing (Auditory Processing Disorder, Central Auditory Processing)
The brain ability to interpret and make sense of sounds, particularly speech. Auditory processing difficulties—which commonly co-occur with ADHD—can make it challenging to distinguish speech from back…
Autism Spectrum (Autism Spectrum Disorder, ASD, Autism Spectrum Condition)
A neurodevelopmental condition characterized by differences in social communication, interaction patterns, and restricted or repetitive behaviors, interests, or activities. The spectrum concept reflec…
Autism Spectrum Disorder (ASD, Autism, Autistic Spectrum Condition)
A neurodevelopmental condition characterized by differences in social communication and interaction, along with restricted or repetitive patterns of behavior, interests, or activities. Autism exists o…
Carpal Tunnel Syndrome (CTS, Carpal Tunnel)
A condition caused by compression of the median nerve as it passes through the carpal tunnel in the wrist, resulting in numbness, tingling, weakness, and pain in the hand and fingers. Carpal tunnel sy…
Cerebellar Ataxia (Ataxic Dysarthria)
A neurological condition caused by damage to the cerebellum that affects coordination, balance, and motor control. In speech, cerebellar ataxia produces ataxic dysarthria characterized by irregular sp…
Comorbidity (Co-occurring Conditions, Dual Diagnosis)
The simultaneous presence of two or more medical conditions or disorders in the same individual. Comorbidity is extremely common in neurodevelopmental and mental health conditions—for example, ADHD fr…
Congenital Blindness (Congenital Vision Loss)
Blindness or severe visual impairment present from birth or very early childhood, as opposed to acquired or adventitious blindness that develops later in life. The distinction is significant for acces…
Hemiparesis (Hemiplegia, One-Sided Weakness)
Weakness or partial paralysis affecting one side of the body, commonly resulting from stroke, traumatic brain injury, or neurological conditions. Hemiparesis affects motor control, coordination, and s…
Hyperactivity
A core symptom of ADHD characterized by excessive movement, restlessness, difficulty remaining seated or still, and feeling driven as if by a motor. In adults, hyperactivity often manifests as interna…
Impulsivity (Impulsiveness)
A core symptom of ADHD characterized by acting without forethought, difficulty waiting, interrupting others, and making hasty decisions without considering consequences. In digital contexts, impulsivi…
Inattention (Inattentiveness)
A core symptom of ADHD characterized by difficulty sustaining focus, being easily distracted by irrelevant stimuli, difficulty following through on instructions, and appearing not to listen when spoke…
Intellectual Disability (ID, Cognitive Disability, Learning Disability (UK))
A disability characterized by significant limitations in intellectual functioning (reasoning, learning, problem-solving) and adaptive behavior (conceptual, social, and practical skills) that originate…
Motor Impairment (Motor Disability, Physical Disability, Movement Impairment)
A condition that affects a person ability to control physical movements, including fine motor skills (small precise movements like typing) and gross motor skills (larger movements like reaching). Moto…
Movement Disorder (Motor Disorder)
A group of neurological conditions that affect the speed, fluency, quality, and ease of movement. Movement disorders can cause excessive or reduced movement that may or may not be voluntary. Common ty…
Multiple Disabilities (Multi-impairment, Multiple Impairments, Combined Disabilities, Complex Disabilities)
The presence of two or more disabilities in the same individual, such as combined motor and visual impairments, or deafblindness. People with multiple disabilities often face compounded accessibility …
Neurodegenerative Disease (Neurodegenerative Disorder, Neurodegeneration)
A category of diseases characterized by progressive loss of structure or function of neurons, including death of nerve cells. Common neurodegenerative diseases include Alzheimer's disease, Parkinson's…
Neurodevelopmental Disorder (NDD, Neurodevelopmental Disability)
An umbrella term for a group of conditions that originate during the developmental period and involve impairments in cognitive, social, emotional, or motor functioning. Common neurodevelopmental disor…
Neurodevelopmental Disorder (NDD)
A group of conditions that arise during the developmental period and are characterized by developmental deficits that produce impairments in personal, social, academic, or occupational functioning. Ne…