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Related Experiment Video

Updated: May 27, 2026

Cheek Injection Model for Simultaneous Measurement of Pain and Itch-related Behaviors

Cheek Injection Model for Simultaneous Measurement of Pain and Itch-related Behaviors

Published on: September 27, 2019

The itchy scalp--scratching for an explanation.

Ghada A Bin Saif¹, Marna E Ericson, Gil Yosipovitch

¹Department of Dermatology, College of Medicine, King Saud University, Riyadh, Saudi Arabia.

Experimental Dermatology

|November 19, 2011

Summary

Scalp itching, a challenging condition, is explored through its unique neurobiology. This review details scalp neuroanatomy, itch mediators, and proposes a mechanism for scalp itch, advancing understanding of this common complaint.

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Area of Science:

Dermatology
Neuroscience
Pathophysiology

Background:

Scalp pruritus is a frequent and difficult-to-treat condition.
Scalp skin possesses a distinct neural structure with abundant hair follicles and dermal blood vessels.
Despite progress in itch understanding, scalp itching remains understudied.

Purpose of the Study:

To review current knowledge on scalp neurobiology and itch mediators.
To propose a mechanism for scalp itch based on neuroanatomy and pathophysiology.

Main Methods:

Literature review focusing on scalp neurobiology.
Analysis of itch mediators relevant to the scalp.
Synthesis of information to propose a pathophysiological mechanism.

Main Results:

The scalp's unique neuroanatomy, including hair follicles, plays a role in itch.
Specific itch mediators contribute to scalp pruritus.
A putative mechanism for scalp itch is presented.

Conclusions:

Understanding scalp neurobiology and pathophysiology is crucial for managing pruritus.
Further research into scalp itch mechanisms is warranted.
This review provides a foundation for future studies and clinical approaches.