I Felt Something Crawling on My Back in Bed — But the Truth Wasn’t What I Expected

Have you ever been lying in bed when you suddenly felt something crawling across your skin?

Your first thought might be simple: There must be a bug in the bed.

You turn on the light, check the sheets, shake out the blankets, and inspect your mattress. But there is nothing there.

That strange experience can be surprisingly frightening. Yet sometimes, the sensation isn’t caused by an insect at all.

The Strange Sensation Has a Name

One possible explanation is formication, a sensation in which a person feels as though insects are crawling on or underneath the skin even though nothing is actually there.

The sensation can feel completely real. It may be described as crawling, tingling, itching, or tiny movements across the skin.

Several factors can contribute to these sensations, including stress, lack of sleep, certain medications, hormonal changes, skin conditions, nutritional deficiencies, and some neurological conditions.

Why Does It Sometimes Happen at Night?

Nighttime can make unusual sensations seem much more noticeable.

When you’re lying quietly in bed, there are fewer distractions. You may suddenly become aware of a tiny muscle twitch, a strand of hair brushing against your skin, movement from the bedsheet, or ordinary itching.