Contact dermatitis – a difficult diagnosis: a clinical case

O.N. Pozdnyakova, A.S. Chasnyk, O.B. Nemchaninova, E.Yu. Sklyanova, T.B. Reshetnikova

1) Novosibirsk State Medical University, Novosibirsk, Russia; 2) Novosibirsk National Research State University, Novosibirsk, Russia

Background. Contact dermatitis (CD) – irritant and allergic – is a group of skin diseases that are caused by skin contact with irritants or allergens, are characterized by a variety of morphological manifestations depending on the stage of the process and can mimic a wide range of dermatological nosologies. In the treatment of both variants of CD, the main factor is the elimination of the trigger agent/allergen, so it is important to differentiate CD from other skin diseases as early as possible, which will avoid prescribing unreasonable and often unsuccessful treatment.
Description of the clinical case. The article presents a clinical case of allergic contact dermatitis that developed against the background of a long course of scabies in a patient with limited scleroderma.
Conclusion. It is known that the clinical picture of scabies is determined both by the activity of the scabies mite and the allergic reaction of the body to the pathogen and its waste products, which in this case led to the development of complications in the form of allergic dermatitis. The rapid regression of rashes after the appointment of a scabicide convincingly shows how important the elimination of the irritant, in this case, the scabies mite, is for the relief of clinical symptoms of CD.

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About the Authors

Corresponding author: Anna S. Chasnyk, Resident in Dermatovenereology, Novosibirsk National Research State University, V. Zelman Institute of Medicine and Psychology, Center for Postgraduate Medical Education, Novosibirsk, Russia; annachasnyk@yandex.ru

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