Hidden Disabilities Glossary (A–Z)
Clear, gentle definitions for invisible disabilities, support terms, and everyday functioning language.
Welcome
Invisible doesn’t mean “not real”
Hidden (invisible) disabilities are conditions that may not be obvious to others but can affect energy, sensory processing, pain, cognition, mental health, and daily life. This glossary helps you understand common terms.
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Tip: Try the word you saw in a report or what someone said to you.
Content note (gentle):
Some terms relate to health, disability, distress, burnout, or recovery. Definitions are calm and educational.
If anything feels heavy, take a break and return when you feel ready.
Access needs & accommodations
Hidden disabilities often need supports even if you “look fine.” Common supports include flexible scheduling, reduced sensory load, rest breaks, accessible formats, and assistive tech.
Rest breaks
Flexible deadlines
Quiet space
Accessible formats
Assistive tech
Language matters
Helpful phrases include: “How can I support you?” “What makes this easier?” and “Do you need a break?” Avoid: “But you don’t look disabled,” “Everyone gets tired,” or “Try harder.”
Believe people
Ask, don’t assume
Offer choices
A
Letter A
- Access needs
- Supports that help a person participate safely and fairly. Example: “My access needs include breaks and low-noise spaces.”
- Accommodation
- A change that reduces barriers without removing expectations. Example: “Flexible deadlines are an accommodation.”
- Activity pacing
- Balancing tasks and rest to avoid symptom flare-ups. Example: “I pace my day so I don’t crash.”
- Allodynia
- Pain from stimuli that usually aren’t painful (e.g., light touch). Example: “My skin hurts even with gentle fabric.”
- Autonomic nervous system
- The system that manages automatic functions (heart rate, digestion, stress responses). Example: “Stress affects my autonomic system and energy.”
B
Letter B
- Brain fog
- Mental cloudiness affecting focus, memory, or processing. Example: “Brain fog makes it hard to find words.”
- Burnout
- Exhaustion from prolonged stress/overload; can include reduced function and sensitivity. Example: “I’m in burnout so I need extra rest and fewer demands.”
- Baseline
- Your typical level of function when symptoms are stable. Example: “My baseline changes when I’m unwell.”
C
Letter C
- Chronic illness
- A long-term health condition that may fluctuate over time. Example: “My chronic illness affects energy and planning.”
- Chronic pain
- Pain that lasts beyond typical healing time. Example: “Chronic pain affects my concentration.”
- Cognitive load
- The amount of mental effort needed to do a task. Example: “Too much cognitive load triggers fatigue.”
- Communication fatigue
- Exhaustion from talking, processing, or social interaction. Example: “After meetings, I need quiet time.”
D
Letter D
- Disability (social model)
- The idea that barriers (not bodies) disable people. Example: “Access reduces disability barriers.”
- Disability disclosure
- Choosing whether, when, and how to share a diagnosis or needs. Example: “I disclosed so I could request accommodations.”
- Dysautonomia
- Autonomic nervous system dysregulation (heart rate, blood pressure, temperature). Example: “Standing up can trigger symptoms.”
E
Letter E
- Executive dysfunction
- Difficulty starting, planning, switching, or finishing tasks. Example: “I can know what to do and still struggle to start.”
- Energy envelope
- The range of activity you can do without a big crash. Example: “I stay within my energy envelope.”
- Exacerbation (flare)
- A period when symptoms become worse. Example: “Stress can trigger a flare.”
F
Letter F
- Fatigue
- Deep exhaustion not always improved by sleep. Example: “Fatigue limits how much I can do in a day.”
- Flare day
- A day when symptoms spike and you may need extra supports. Example: “Today is a flare day — I’m reducing tasks.”
- Functional impairment
- When symptoms affect daily activities (work, study, self-care). Example: “The impairment is real even if it’s invisible.”
G
Letter G
- Gaslighting (health context)
- When someone is made to doubt their symptoms or reality. Example: “Being dismissed made me question myself.”
- Grace period
- Extra time or flexibility during a difficult health period. Example: “A grace period helped me recover.”
H
Letter H
- Hidden disability
- A disability that isn’t always visible to others. Example: “You can’t always see pain, fatigue, or sensory overload.”
- Hyperacusis
- Sound sensitivity that can feel painful or overwhelming. Example: “Normal noises can feel too loud.”
- Hypermobility
- Joints that move more than typical and may cause pain/injury. Example: “Hypermobility affects my stamina.”
I
Letter I
- Invisible symptoms
- Symptoms others can’t easily observe (pain, dizziness, brain fog). Example: “My symptoms are invisible but constant.”
- Interoception
- Sensing internal body signals (hunger, pain, needing the toilet). Example: “Interoception differences affect how I notice needs.”
J
Letter J
- Job accommodations
- Workplace changes that support access and reduce barriers. Example: “I asked for flexible start times.”
K
Letter K
- Keep it simple plan
- A reduced plan for flare/burnout days. Example: “Today’s plan is meals + rest + one small task.”
L
Letter L
- Low spoons
- Having limited energy to manage the day (spoon theory). Example: “I’m low on spoons so I’m prioritising rest.”
- Long COVID
- Ongoing symptoms after COVID-19 infection. Example: “Long COVID affects my stamina.”
M
Letter M
- Masking
- Hiding symptoms or copying expected behaviour to fit in. Example: “Masking all day leads to burnout.”
- Medical trauma
- Distress linked to healthcare experiences (dismissal, pain, loss of control). Example: “Appointments can trigger anxiety.”
- Migraine
- A neurological condition that can include pain, nausea, and sensory sensitivity. Example: “Light sensitivity is part of my migraine.”
N
Letter N
- Neurodivergence (related term)
- Brain differences that affect thinking, learning, or processing. Example: “My neurodivergence affects sensory processing.”
- Needs-based approach
- Support based on what helps day-to-day, not just a label. Example: “Let’s focus on what helps you function.”
O
Letter O
- Overstimulation
- Too much sensory or cognitive input leading to overwhelm. Example: “I need a quiet space to recover.”
- Occupational therapy (OT)
- Support for daily function, skills, and participation. Example: “OT helped me with energy management.”
P
Letter P
- Pain flare
- A period when pain increases and function may drop. Example: “I use heat packs during a flare.”
- Post-exertional malaise (PEM)
- Worsening symptoms after activity (physical or mental), often delayed. Example: “Too much activity causes a crash the next day.”
- Reasonable accommodations
- Practical changes at work/school that reduce barriers. Example: “Reasonable accommodations help me participate.”
Q
Letter Q
- Quality of life
- Overall wellbeing, comfort, access, and ability to do meaningful activities. Example: “Supports improved my quality of life.”
R
Letter R
- Recovery plan
- A supportive plan for rest, pacing, and reducing demands. Example: “My recovery plan includes sleep and gentle movement.”
- Relapse
- Symptoms returning or worsening after improvement. Example: “Relapse doesn’t mean failure — it means more support.”
- Reasonable adjustments
- Changes to reduce barriers in education or work. Example: “Working from home is a reasonable adjustment.”
S
Letter S
- Sensory sensitivity
- Heightened sensitivity to sound, light, touch, smell, or texture. Example: “Noise sensitivity affects my ability to focus.”
- Spoon theory
- A way to explain limited energy resources. Example: “I have fewer spoons today, so I’m prioritising.”
- Stigma
- Negative beliefs or judgment about disability. Example: “Stigma makes it harder to ask for help.”
T
Letter T
- Treatment plan
- A plan for symptom management (medical and non-medical). Example: “My plan includes pacing and medication.”
- Trauma-informed
- Approach that prioritises safety, choice, and respect. Example: “Trauma-informed care asks before touching.”
U
Letter U
- Unseen barriers
- Obstacles others may not notice (fatigue, pain, processing). Example: “My barriers are often unseen.”
- Understanding (validation)
- Being believed and supported without needing to prove suffering. Example: “Being validated reduces stress.”
V
Letter V
- Validation
- Recognising someone’s experience as real and meaningful. Example: “Thank you for validating what I’m going through.”
- Variable functioning
- Ability changes from day to day. Example: “Some days I can do more — some days I can’t.”
W
Letter W
- Work capacity
- How much work/study activity is possible without harm. Example: “My work capacity is lower during flares.”
- Wellbeing plan
- A plan for supports, triggers, and coping strategies. Example: “My plan includes breaks and safe spaces.”
X
Letter X
- X-factor strengths
- Strengths that matter even when life is hard (creativity, empathy, insight). Example: “My strengths still count on low-energy days.”
Y
Letter Y
- Your pace
- A reminder that your timeline and capacity are valid. Example: “I’m recovering at my pace.”
Z
Letter Z
- Zero shame approach
- Support that removes blame and focuses on needs. Example: “We use a zero-shame approach here.”