Erythema nodosum as an atypical dermatological manifestation of HTLV-1 infection: A case report and literature review.

Human T-lymphotropic virus 1 (HTLV-1) is the etiological agent of several pathologies, and some of them are not investigated, resulting in a lack of literature that impacts the correct diagnosis. Skin manifestations, such as HTLV-1-associated infectious dermatitis (IDH), are common in patients living with HTLV-1 but could not be the only one. Here, we report for the first time a patient infected with HTLV-1, without previous diagnosis of HTLV-1-related diseases, presenting erythema nodosum (EN). Given the patient's long-term asymptomatic carrier status, the emergence of EN underscores the importance of considering HTLV-1 in the differential diagnosis when encountering EN, especially in endemic regions.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Fernanda Khouri Barreto reports financial support was provided by Foundation for Research Support of Bahia State. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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