Why do temperature changes (hot or cold) feel more extreme with ADHD?
Many people with ADHD notice heat or cold far more intensely than others. Sudden warmth might feel overwhelming, while a cool breeze can feel uncomfortably sharp. NHS sensory services explain that this relates to sensory over-responsivity, where the nervous system reacts more strongly to environmental input. The Royal College of Psychiatrists also highlights that sensory differences often accompany ADHD, even though they aren’t part of the diagnostic criteria in NICE NG87.
How ADHD affects the way you sense temperature
NHS sensory hubs report that people with ADHD may be more sensitive to heat or cold because the brain processes temperature signals more intensely. The Humber NHS Sensory Hub notes that our touch receptors feed information about temperature and pressure into the nervous system but when the system becomes over-responsive, these sensations feel amplified.
PubMed studies also show altered somatosensory processing, interoception and sensory gating in ADHD. Some research suggests the autonomic nervous system responsible for regulating body temperature and arousal can be more reactive in ADHD, contributing to sudden feelings of being “too hot” or “too cold” (physiological study).
Stimulant medication can add complexity by occasionally making people more prone to heat-related discomfort during exercise or high temperatures, according to emerging evidence.
Why heat and cold sensitivity changes day to day
NHS teams emphasise that temperature sensitivity is closely linked with emotional state and stress levels. The NELFT sensory service explains that sensory overload increases when someone is tired, stressed or overwhelmed, making hot or cold sensations feel sharper or harder to regulate.
The Nottinghamshire NHS sensory service adds that tolerance can fluctuate significantly, which is why a warm classroom or cold outdoor setting may feel manageable one day and unbearable the next.
Why this matters in everyday life
Temperature sensitivity can affect:
- Concentration in warm rooms
- Sleep, particularly with overheating
- Comfort during exercise
- Tolerance of outdoor weather changes
- Wearing layers, coats or uniforms
- Emotional regulation during heatwaves or very cold days
Some NHS OT teams advise schools and workplaces to consider temperature sensitivity in risk assessments because unmanaged discomfort can lead to irritability, distress or reduced participation.
Evidence-informed strategies that may help
NHS and UK occupational therapy services recommend practical adjustments rather than pushing through discomfort:
- Wear breathable, layered clothing (cotton, bamboo) to adjust quickly
- Use cooling aids in warm settings; fans, shade, hydration, moisture-wicking garments
- Choose warm, soft layers for cold environments
- Take movement breaks to help regulate heat and sensory overload
- Use grounding techniques such as deep pressure or weighted items
- Plan activities during cooler parts of the day when heat is a trigger
- Allow flexible clothing at school or work during temperature extremes
Guidance from the Betsi Cadwaladr NHS sensory service and CARIAD NHS advisory OT highlights how small environmental adjustments can prevent sensory overload.
The takeaway
Temperature can feel more extreme with ADHD because the nervous system processes heat and cold more intensely, especially when someone is stressed or overloaded. With supportive clothing choices, hydration, layers and sensory regulation techniques, most people can create environments that feel far more manageable and comfortable.
