Types of disabilities

In accessibility, disability is not about labels. It is about barriers.

A disability becomes relevant in digital contexts when a design decision prevents someone from perceiving, understanding, navigating, or interacting with content.

People experience disability in different ways. Some conditions are visible. Many are not. Some are permanent. Others are temporary or situational.

Understanding different types of disabilities helps us recognise where barriers may appear — and how to remove them.

This section provides an overview of common disability categories and the kinds of digital barriers associated with them.

Disability is not one thing

Disabilities vary widely in:

How they affect perception (seeing, hearing)
How they affect interaction (movement, speech)
How they affect processing (memory, attention, comprehension)
How they affect tolerance (motion, flashing, stress)

Some people experience more than one disability at the same time. Accessibility solutions must work together — not in isolation.

Accessibility is not about designing for a single user profile. It is about designing for human variability.

Permanent, temporary, and situational disability

Disability is not always permanent.

A person may experience barriers due to:

A long-term condition
A temporary injury or illness
A situational limitation (for example, bright sunlight or a noisy environment)

Accessibility reduces barriers across all of these contexts.

Learn more about permanent, temporary, and situational disabilities

Disability categories

The categories below group common types of disabilities that influence digital accessibility. Each page explores typical barriers, design considerations, and practical solutions.

Auditory disabilities

Conditions that affect how a person perceives sound.

Barriers arise when information is provided only through audio without captions or text alternatives.

Learn more about auditory disabilities

Cognitive and learning disabilities

Conditions that affect information processing, memory, attention, or comprehension.

Barriers often involve complex language, inconsistent navigation, or cognitive overload.

Learn more about cognitive and learning disabilities

Deaf-blindness

Combined significant vision and hearing loss.

Barriers arise when content depends on a single sensory channel or lacks semantic structure.

Learn more about deaf-blindness

Mobility, flexibility, and body structure disabilities

Conditions that affect physical movement or coordination.

Barriers arise when interaction depends on precise, fast, or mouse-based input.

Learn more about mobility, flexibility, and body structure disabilities

Multiple and compound disabilities

Situations where a person experiences more than one disability.

Accessibility solutions must be compatible and layered to support intersecting needs.

Learn more about multiple and compound disabilities

Psychological and psychiatric disabilities

Conditions that affect emotional regulation, stress tolerance, or concentration.

Barriers may arise from overwhelming layouts, unexpected behaviour, or high-pressure interactions.

Learn more about psychological and psychiatric disabilities

Conditions where flashing or rapidly changing visual content can trigger seizures.

Unsafe visual effects can pose serious health risks.

Learn more about seizure-related disabilities

Speech disabilities

Conditions that affect spoken communication.

Barriers appear when voice interaction is required without text-based alternatives.

Learn more about speech disabilities

Visual disabilities

Conditions that affect how a person sees or perceives visual information.

Barriers often involve missing text alternatives, low contrast, or layout structures that depend entirely on sight.

Learn more about visual disabilities

Key principle

Disability is often a mismatch between a person’s abilities and their environment. Accessible design reduces that mismatch.

When digital services are structured, flexible, and predictable, they become usable across a wide range of human abilities — permanent, temporary, and situational.