Eczema and sleep — how to stop night-time scratching

Night-time scratching is one of the most damaging and distressing aspects of eczema, and it's one that gets less attention than it deserves. The skin that was slowly repairing through the day is undone in hours of unconscious scratching. The sleep deprivation that results has inflammatory consequences that make the eczema worse. And the exhaustion affects every part of life.

Addressing night-time scratching requires interventions at several levels simultaneously.

Why scratching intensifies at night

Several factors make eczema worse at night. Body temperature rises during sleep preparation, and warmth intensifies itch. The Th2 immune activity that drives eczema is higher in the evening and early night. The hormone melatonin, which rises at night to induce sleep, has pro-inflammatory effects on the skin in people with eczema. And the conscious distraction that suppresses scratching during the day is absent during sleep.

Cortisol, which has some anti-inflammatory effect, is at its lowest during the night. The combined effect of high Th2 activity, low cortisol, rising temperature, and no conscious suppression creates the conditions for intense night scratching.

The bedroom environment

Making the bedroom cool (16–18°C) reduces the temperature-itch component significantly. Many people find this the single most impactful change for night-time symptoms.

Allergen-proof covers on the mattress, pillow, and duvet reduce the allergen exposure that activates mast cells and histamine release during the night. This is the dust mite intervention described in detail in the environmental trigger article.

Cotton or silk bedding, washed at 60°C without fabric softener, reduces the irritant load. Heavyweight synthetic duvets that create significant warmth should be replaced with lighter alternatives.

The pre-sleep routine

A consistent pre-sleep application of emollient — immediately after a lukewarm bath or shower — is the most important maintenance intervention for night-time symptoms. The emollient should be heavier and more occlusive than the daytime product: ointments are more appropriate than lotions or creams for the overnight period.

If an active flare is present, applying prescribed topical treatment before the emollient layer is appropriate. Managing the active inflammation before sleep reduces the itch intensity during the night.

Physical barriers

Cotton or silk gloves worn at night prevent fingernails reaching the skin effectively. Many people find them uncomfortable initially but adapt within a few nights. Pyjamas that cover the arms and legs prevent scratching of limb areas during sleep.

For children, wet wrapping at bedtime provides both the barrier effect and the cooling, anti-itch effect of the damp layer. In severe cases, keeping fingernails very short — filed smooth to remove sharp edges — reduces the damage caused by scratching that does occur.

Addressing the sleep disruption directly

Sleep deprivation from eczema has inflammatory consequences — elevated cortisol, increased Th2 activity — that worsen the eczema and create a cycle. Addressing the sleep disruption directly, rather than only its cause, breaks part of this cycle.

Consistent sleep and wake times, regardless of how the previous night went, reset circadian rhythms over one to two weeks. Avoiding screens for 60 minutes before bed allows melatonin to rise at the appropriate time, making sleep onset easier. A bedroom that is dark, cool, and quiet creates the conditions for deeper, more restorative sleep.