What Is Sensory Overload? Signs, Causes and Everyday Experiences

Have you ever walked into a busy shopping centre and immediately felt overwhelmed by the noise, lights and movement around you? Do crowded environments leave you feeling exhausted, anxious or unable to think clearly? If so, you may have experienced sensory overload.

What Is Sensory Overload?

Sensory overload occurs when the brain receives more sensory information than it can comfortably process at one time.

Our brains are constantly processing information from the environment, including sounds, lights, textures, smells, movement, temperature and visual information.

What Does Sensory Overload Feel Like?

Common descriptions include:

• Feeling overwhelmed by noise
• Difficulty concentrating
• Feeling mentally exhausted
• Increased irritability
• Difficulty processing conversations
• Feeling unable to think clearly
• Wanting to leave the environment

Real-World Example: Sarah

Sarah visits a busy shopping centre on a Saturday afternoon. Music is playing, people are talking, lights are bright and the environment feels crowded. After a short period, the combination of sensory demands becomes overwhelming.

How Does Sensory Processing Work?

Sensory processing refers to how the brain receives, organises and responds to information from the environment.

Related resource: What Are Traits, Sub-Traits and Cognitive Spectrums?

Common Causes of Sensory Overload

Noise

• Multiple conversations
• Loud music
• Traffic sounds
• Crowded public spaces

Bright Lights

• Fluorescent lighting
• Flashing lights
• Bright screens

Crowded Environments

• Shopping centres
• Public transport
• Concerts
• Large social events

Multiple Sensory Inputs

Sensory overload often develops when several sensory demands occur simultaneously.

Signs of Sensory Overload

Cognitive Signs

• Difficulty concentrating
• Mental fog
• Slower thinking

Physical Signs

• Fatigue
• Headaches
• Tension

Emotional Signs

• Frustration
• Irritability
• Feeling overwhelmed

Sensory Overload and Neurodiversity

Sensory overload is frequently discussed within neurodiversity and may be associated with autism, ADHD, AuDHD and sensory processing differences.

Related resource: Signs You May Be Neurodivergent

Sensory Overload and Social Energy

Sensory processing and social energy are often closely connected.

Related resources:

• Why Am I Exhausted After Socialising?
• Social Exhaustion Explained
• Understanding Social Recovery Time

Practical Strategies for Managing Sensory Overload

• Identify common triggers
• Take sensory breaks
• Reduce unnecessary stimulation
• Use quieter environments
• Plan recovery time

Expert Perspectives

Dr Temple Grandin

The world needs different kinds of minds.

Dr Luke Beardon

If you’ve met one autistic person, you’ve met one autistic person.

Frequently Asked Questions

What is sensory overload?

Sensory overload occurs when the brain receives more sensory information than it can comfortably process.

Is sensory overload a sign of autism?

Some autistic people experience sensory overload, but sensory overload is not exclusive to autism.

Can ADHD cause sensory overload?

Some people with ADHD report sensory sensitivities and experiences of sensory overload.

Related Resources

• Signs You May Be Neurodivergent
• Why Cognitive Profiling?
• What Are Traits, Sub-Traits and Cognitive Spectrums?
• Why Am I Exhausted After Socialising?
• Social Exhaustion Explained
• Understanding Social Recovery Time
• Autism Masking in Adults

External Links

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NHS – Mental Wellbeing

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