Have you ever felt as though tiny insects were crawling across your skin, even when nothing was there? This unusual sensation is sometimes called formication. It can feel like crawling, tickling, prickling or tiny movements beneath the skin.
1. Nerve irritation: Nerves carry sensations between your skin and brain. When they become irritated or damaged, they can send unusual signals.
2. Diabetes-related nerve problems: Long-term high blood sugar can damage peripheral nerves, sometimes producing crawling, burning or tingling sensations.
3. Vitamin deficiencies: Low levels of certain nutrients, particularly vitamin B12, may affect normal nerve function.
4. Skin dryness: Dry or irritated skin can produce itching, prickling and crawling-like sensations.
5. Certain medications or substances: Some medicines and substances can cause unusual skin sensations. Alcohol or drug withdrawal can also produce formication.
6. Stress and anxiety: Stress can make people more aware of normal bodily sensations and may contribute to unusual tingling or prickling feelings.
What should you do?
Avoid scratching aggressively or applying strong chemicals to the skin. Check whether there is an actual rash, insect bite or irritation.
If the sensation continues, spreads or comes with numbness, weakness or other symptoms, speak with a healthcare professional.
Sudden confusion, severe agitation or new neurological symptoms need urgent assessment.
A crawling sensation does not necessarily mean insects are underneath your skin. Identifying the cause is more useful than trying random skin treatments.
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