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How does the nervous system cause itching?

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Your nervous system can get confused when it’s sick and accidentally tell the nerves on the skin to start itching when there’s nothing there to cause it. There is no rash. But your skin may appear irritated if you’ve been scratching a lot. Your brain may send an itch signal to the nerves in your skin, even though there is nothing there to cause it. You can get it from:

  • Shingles
  • Multiple sclerosis
  • Stroke
  • Brain tumor
  • Nerve damage

From: Why Do I Feel So Itchy? WebMD Medical Reference

SOURCES:

American Academy of Allergy Asthma & Immunology: “Skin Allergy.”

American Academy of Dermatology.

Jain, S. , October 2013. Current Psychiatry

Moses, S. , September 2003. American Family Physician

National Cancer Institute: “Pruritus.”

National Psoriasis Foundation: “About Psoriasis.”

Oaklander, A. , March 2012. Acta Dermato-Venereologica

The Cleveland Clinic Foundation: “Pruritus.”

Yonova, D. April-June 2007. Hippokratia,

Yosipovitch, G. Dermatologic Therapy, March 2008.

Reviewed by Stephanie S. Gardner on December 6, 2017

SOURCES:

American Academy of Allergy Asthma & Immunology: “Skin Allergy.”

American Academy of Dermatology.

Jain, S. , October 2013. Current Psychiatry

Moses, S. , September 2003. American Family Physician

National Cancer Institute: “Pruritus.”

National Psoriasis Foundation: “About Psoriasis.”

Oaklander, A. , March 2012. Acta Dermato-Venereologica

The Cleveland Clinic Foundation: “Pruritus.”

Yonova, D. April-June 2007. Hippokratia,

Yosipovitch, G. Dermatologic Therapy, March 2008.

Reviewed by Stephanie S. Gardner on December 6, 2017

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