Overview Have you ever experienced that sensation where you feel insects crawling on or under the skin? This condition, according to best neurologist in Gurgaon , is known as formication. The word formication comes from the Latin word “formica” which means “ant”. Formication is a type of tactile hallucination, which means that the affected person feels a sensation that isn’t there. There is no physical cause of formication, according to a top neuro physician in Gurgaon . The condition can lead to itching, which may be worse at night and can be severe enough to impact on a person's quality of life. Causes Formication is linked to several other medical conditions, as well as withdrawal from some drugs and substances. Causes include: Parkinson's disease Shingles Fibromyalgia Anxiety Perimenopause Lyme disease Diabetic neuropathy Skin cancer Schizophrenia It is possible that lower oestrogen levels during perimenopause and menopause may also cause