Analysis of SARS-CoV-2-Associated Cutaneous Manifestations: Vascular Eruption

QUESTION

• Gisondi, P., PIaserico, S., Bordin, C., Alaibac, M., Girolomoni, G., & Naldi, L. (2020). Cutaneous manifestations of SARS-CoV-2 infection: a clinical update. Journal of the European Academy of Dermatology and Venereology, 34(11), 2499-2504.

The SARS CoV-2 virus has been associated with four patterns of skin manifestations also seen in clinical presentations that are not related to this disease. In this discussion, we will be conducting an assessment of cutaneous manifestations related to the SARS-CoV-2 virus. These are described in the above article and include:

• Exanthema pattern: varicella-like, papulo-vesicular and morbilliform rash – Example: Chickenpox or shingles
• Vascular eruption: chilblain-like, purpuric/petechial and livedoid lesions – Example: Chilblains
• Urticaria-like pattern: Example: Hives
• Acro-papular eruption: Example: Gianotti-Crosti syndrome, common in children

In your post, please include the following:

• Choose ONE of the specific SARS-Co-2 dermatologic pathologies identified under ONE of the four patterns listed in the article and described above.
• Analyze the pathophysiology of the cutaneous manifestation you chose, comparing it to one of the associated examples provided above. Note any significant inflammatory and immune processes involved in the pathology.
• Summarize the clinical presentation of the pathology you chose referencing case studies noted in the literature. Include appearance, time of onset during COVID, severity, and duration. Note any variations based on age, sex, race or ethnicity, if known.

ANSWER

Analysis of SARS-CoV-2-Associated Cutaneous Manifestations: Vascular Eruption

Introduction

The SARS-CoV-2 virus has presented various cutaneous manifestations that resemble clinical presentations of other diseases. This discussion focuses on the vascular eruption pattern, particularly the chilblain-like lesions associated with COVID-19. These manifestations have prompted interest due to their potential implications for diagnosis, prognosis, and understanding the pathophysiology of the virus.

Pathophysiology of Chilblain-Like Lesions and Comparison to Chilblains

Chilblain-like lesions observed in COVID-19 patients exhibit characteristics similar to chilblains, a dermatologic condition typically seen in response to cold exposure. The pathophysiology of both conditions revolves around inflammatory and immune processes. In chilblains, cold exposure causes vasoconstriction and subsequent vasodilation upon rewarming. This vascular response leads to inflammation and immune activation, resulting in the characteristic purpuric/petechial and livedoid lesions. Similarly, SARS-CoV-2’s interaction with the angiotensin-converting enzyme 2 (ACE2) receptor may trigger vascular endothelial dysfunction, immune activation, and microthrombi formation, contributing to the chilblain-like lesions in COVID-19 patients.

Clinical Presentation of Chilblain-Like Lesions in COVID-19

Chilblain-like lesions related to COVID-19 typically manifest as erythematous to purpuric or petechial patches and papules on acral surfaces, including the toes and fingers. The lesions may be associated with itching or burning sensation. These skin manifestations, often referred to as “COVID toes,” have been reported primarily in young adults and adolescents. The onset of chilblain-like lesions occurs later in the course of COVID-19, during the convalescent phase, distinguishing them from other skin manifestations linked to the virus. The severity of lesions varies, with most cases being mild and self-limited. Duration is usually a few weeks, but it can extend up to months in some instances.

Variations in Clinical Presentation

Chilblain-like lesions in COVID-19 patients seem to exhibit variations based on age, sex, and race. Studies have reported that adolescents and young adults, particularly females, are more prone to develop these lesions. A case study published in the Journal of the European Academy of Dermatology and Venereology by Gisondi et al. (2020) highlighted the case of an 18-year-old female with chilblain-like lesions associated with SARS-CoV-2 infection. The severity of the lesions can vary among patients, ranging from mild and localized to more extensive involvement of acral surfaces.

Conclusion

Chilblain-like lesions associated with SARS-CoV-2 highlight the complex interplay between viral pathophysiology, vascular dysfunction, and immune response. Their resemblance to chilblains and other clinical presentations emphasizes the importance of considering these manifestations when assessing suspected COVID-19 cases. Further research is needed to fully understand the underlying mechanisms and to determine whether these cutaneous manifestations could serve as potential diagnostic indicators or prognostic markers for COVID-19.