Table of Content


Summer 2007, Vol. 15 No. 2

Hong Kong J. Dermatol. Venereol. (2007) 15, 75-77

Pearls in Dermatology

How I measure pruritus using a wrist movement detector

KLE Hon 韓錦倫 and MCA Lam 林文政

Itch is a common and annoying symptom in many dermatological and systemic diseases. Scratching is a natural response to itch and its severity can be objectively assessed by measuring the intensity of scratching as wrist movement. The use of a wrist movement detector well serves the purpose. It allows accurate evaluation of nocturnal wrist activities in itching conditions including atopic dermatitis, pemphigoid gestationis and pruritus of malignancy. This device is very easy to use non-intrusively at home by patient, obviating the need of hospitalisation.