Chik Sign: A Clinical Clue to Chikungunya Infection- A Case Series
Correspondence Address :
Shreya Srinivasan,
7, CLC Works Road, Chromepet, Chennai-600044, Tamil Nadu, India.
E-mail: shreyasrinivasan93@gmail.com
Chikungunya, transmitted by Aedes mosquitoes, manifests with fever, joint pain, and a distinctive cutaneous feature known as the “Chik sign” or “Brownie nose.” The Chik sign is an asymptomatic freckled hyperpigmentation of the tip and ala of the nose and may persist in the post-infective period. This nasal pigmentation can aid in diagnosing this viral infection, especially in resource-poor settings where serological confirmation is not feasible. Pigmentary changes, though asymptomatic, can persist for months and can be managed conservatively with sun protection, topical moisturisers, and depigmenting creams. The present case series describes three patients with nasal pigmentation that developed after an episode of chikungunya fever. The first patient was a one-month-old female neonate who developed fever at 15 days of age, followed by nasal hyperpigmentation, with a positive maternal history of chikungunya. The second case was a 29-year-old female patient, who developed fever and joint pain, followed by nasal hyperpigmentation one week later, and was diagnosed as a case of chikungunya based on clinical and serological evidence. The third case involved a 62-year-old male patient, who developed fever and joint pain two months ago, followed by nasal hyperpigmentation one week later, and was diagnosed as a case of chikungunya based on clinical and serological evidence.
Aedes mosquitoes, Brownie nose, Nasal pigmentation
DOI: 10.7860/JCDR/2024/70377.19493
Date of Submission: Feb 27, 2024
Date of Peer Review: Mar 27, 2024
Date of Acceptance: Apr 13, 2024
Date of Publishing: Jun 01, 2024
AUTHOR DECLARATION:
• Financial or Other Competing Interests: None
• Was informed consent obtained from the subjects involved in the study? Yes
• For any images presented appropriate consent has been obtained from the subjects. Yes
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• Plagiarism X-checker: Feb 27, 2024
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ETYMOLOGY: Author Origin
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