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The ‘ball sign’ in UV dermoscopy of scabies
Corresponding author: Dr. Feroze Kaliyadan, Department of Dermatology, Sree Narayana Institute of Medical Sciences, Kochi, Kerala, India. ferozkal@gmail.com
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Received: ,
Accepted: ,
How to cite this article: Kaliyadan F, Rafi S, Suresh S. The ‘ball sign’ in UV dermoscopy of scabies. Indian J Dermatol Venereol Leprol. doi: 10.25259/IJDVL_999_2024
UV dermoscopy in scabies
The classical dermoscopic feature seen in scabies is the delta sign (representing the mouth part of the mite) and the ‘jet with contrail’ pattern (representing the mite with the burrow) [Figure 1]. Recently, UV dermoscopy has shown to be useful in demonstrating the body of the mite, in addition to the mouth parts, which has been labelled as the ‘ball-sign’ (the ‘ball’ corresponding to the body of the mite) [Figure 2]. 1
- Dermoscopy (Dermlite DL5, polarised 10x) showing the delta sign of scabies (black circle).
- Dermoscopy (Dermlite DL5, UV mode) showing the body of the mite (black circle) more clearly under UV dermoscopy – the ‘ball sign’.
Declaration of patient consent
The authors certify that they have obtained all appropriate patient consent.
Financial support and sponsorship
Nil.
Conflicts of interest
There are no conflicts of interest.
Use of artificial intelligence (AI)-assisted technology for manuscript preparation
The authors confirm that there was no use of AI-assisted technology for assisting in the writing or editing of the manuscript and no images were manipulated using AI.
Reference
- A new sign with UV dermoscope in the diagnosis of scabies: Ball sign. Skin Res Technol. 2023;29:e13336.
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