Hormonal changes (perimenopause, menopause, pregnancy)
Medication side effects (certain antidepressants, stimulants, blood pressure meds)
Alcohol or drug withdrawal
Skin conditions (dry skin, eczema, neuropathy)
Nutritional deficiencies (low iron, B12, or folate)
Neurological conditions (Parkinson’s, multiple sclerosis, shingles)
In my case, the answer was simple: stress and lack of sleep. I was in a high-pressure period at work, sleeping poorly, and my brain was essentially glitching, creating sensations that weren’t real.
Why Your Brain Creates Phantom Crawling Sensations
Let me explain the science.
Your brain receives constant sensory input from your skin — touch, pressure, temperature, pain, vibration, and the sensation of movement (like a hair brushing against your arm). Usually, it filters out irrelevant sensations (the feel of your clothes, the pressure of the mattress, the air on your skin) and alerts you to important ones (a bug, a sharp object, a hot surface).
When you’re stressed, tired, or anxious, your brain’s filtering system becomes less efficient. It may misinterpret normal sensations (the brush of a bedsheet, a muscle twitch, a hair falling) as something more alarming — like a bug crawling.
This is the same mechanism behind “phantom vibrations” (feeling your phone buzz in your pocket when it didn’t). Your brain is primed to expect a sensation, and it creates one.
The more you focus on the sensation, the worse it gets. The worse it gets, the more you stress. The more you stress, the worse your sleep. It becomes a vicious cycle.
Other Common Causes of Nighttime Crawling Sensations
Let me rule out (or rule in) other possibilities.
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