Nº de DOI: 10.34896/RSI.2025.78.15.001
AUTHORS
- Paola Nathaly Camacho Jiménez. General Practitioner. Attached to Private Clinics of Ecuador. Independent Researcher at the Matilde Hidalgo of Procel Research and Teaching Department. Graduate of the University of Guayaquil. (Loja-Ecuador). https://orcid.org/0009-0006-8706-7022
- Yuliana Lisbeth Merino Jimenez. General Practitioner. Attached to Private Clinics of Ecuador. Graduate of the National University of Loja. (Loja-Ecuador). https://orcid.org/0009-0004-2180-9607
- Maritza Isi Suárez Chávez. General Practitioner. Attached to Private Clinics of Ecuador. Graduate of the Bayamo Medical Sciences Branch. Granma. Cuba. (Ibarra-Ecuador). https://orcid.org/0009-0004-4977-6077
- Gabriela Alejandra Silva Alcívar. General Practitioner. Attached to the Pedro Vicente Maldonado Health Centre. Graduate of the National University of Chimborazo. (Ambato-Ecuador). https://orcid.org/0009-0008-9695-0049
- Pablo Esteban Pupiales Angamarca. General Practitioner. Attached to Private Clinics of Ecuador. Graduate of the Central University of Ecuador. (Ibarra -Ecuador). https://orcid.org/0000-0001-9073-2210
ABSTRACT
This paper will delve into the etiology of cutaneous viral infections, elucidate their clinical manifestations, and evaluate current treatment approaches, ultimately seeking to enhance understanding and improve patient outcomes in the realm of dermatological virology.
KEY WORDS
Cutaneous viral infections, skin viruses, etiology, clinical features, diagnosis and treatment.
RESUMEN
Este artículo profundizará en la etiología de las infecciones virales cutáneas, dilucidará sus manifestaciones clínicas y evaluará los enfoques terapéuticos actuales, con el objetivo de mejorar la comprensión y los resultados de los pacientes en el ámbito de la virología dermatológica.
PALABRAS CLAVE
Infecciones virales cutáneas, virus cutáneos, etiología, características clínicas, diagnóstico y tratamiento.
INTRODUCTION
Cutaneous viral infections represent a significant and often overlooked aspect of dermatological health, affecting millions worldwide and ranging from mild to severe manifestations. These infections are primarily caused by a variety of viruses, including but not limited to herpes simplex virus, human papillomavirus, varicella-zoster virus, and coxsackievirus, each exhibiting unique pathogenic mechanisms and transmission routes that facilitate their entry and proliferation within host skin cells. Understanding the etiology of these infections is crucial, as factors such as compromised immune systems, age, and underlying dermatological conditions can predispose individuals to heightened susceptibility. Clinically, cutaneous viral infections can present with a diverse array of symptoms, including vesicular lesions, rashes, and wart-like growths, necessitating accurate diagnostic methods to differentiate between the various viral pathogens involved. The management of these infections typically involves standard treatment options such as antiviral medications, which can significantly mitigate symptoms and hasten recovery, alongside preventive strategies aimed at reducing transmission risks.
OBJECTIVE
To deepen the aetiology of cutaneous viral infections, clarify their clinical manifestations and evaluate current therapeutic approaches, with the ultimate aim of improving understanding and patient outcomes in the field of dermatological virology.
METHODOLOGY
The methodology for this scientific review follows a systematic approach to comprehensively explore cutaneous viral infections by focusing on their etiology, clinical manifestations, and treatment strategies. A structured literature search is conducted using electronic databases such as PubMed, Scopus, and Web of Science to identify relevant peer-reviewed articles. The search terms include combinations of keywords such as “cutaneous viral infections”, “skin viruses”, “etiology”, “clinical features”, “diagnosis” and “treatment.” The review includes studies published primarily in the last 15 years to ensure the incorporation of up-to-date information and advances in both clinical practice and virology.
Each included study is critically assessed for relevance, methodological quality, and contribution to understanding viral pathogenesis, symptomatology, and therapeutic options. Data are synthesized qualitatively to highlight common and distinguishing clinical features of various viral infections, the underlying mechanisms of infection and immune response, and the range of current and emerging treatment modalities — including antiviral agents, immunomodulators, and preventive strategies such as vaccines.
RESULTS
Etiology of Cutaneous Viral Infections:
What are the primary viruses responsible for cutaneous infections?
Herpes simplex virus (HSV) is recognized as the predominant viral agent causing cutaneous infections, manifesting primarily as oral or genital herpes1. Belonging to the herpesviruses family, HSV is known for its characteristic ability to establish latency and reactivate under certain triggers, leading to recurrent cutaneous manifestations2. In addition to herpes simplex, other members of the herpesvirus family, such as varicella-zoster virus, cause distinct dermatologic conditions like chickenpox and shingles, further highlighting the family’s significant impact on skin health2. Papillomaviruses, specifically human papillomavirus (HPV), are similarly prominent in the landscape of cutaneous viral infections, being chiefly responsible for the development of warts, which are among the most frequent dermatologic complaints observed in clinical practice2. While measles and Zika are not primarily cutaneous, their inclusion in the scope of cutaneous findings stems from their ability to produce distinctive skin rashes, making them relevant to dermatological evaluations and management2. Comprehensive understanding and management of these infections necessitate a multifaceted approach, integrating both therapeutic interventions and preventive strategies, such as vaccination and public health education, to mitigate the burden of these pervasive viral agents.
How do these viruses typically transmit and infect host skin cells?
In the transmission and infection of host skin cells by viruses, the initial step often involves the virus attaching to and infecting cells on body surfaces, such as the skin3. This attachment is facilitated by the binding of viral proteins with specific receptors on the skin cells, initiating the infection process4. Once attached, the virus traverses the cell surface, a critical step for reaching the entry point where fusion with the host cell membrane occurs, allowing the viral DNA or RNA to enter the cells4. This local infection at the skin surface is significant, as it can either remain localized or spread through the body via lymphatics, blood vessels, or nerves3,5. In particular, certain viruses, like the poxviruses, can spread from animals to humans through direct contact with skin lesions, illustrating the importance of the skin as a transmission source, particularly through small abrasions3. Despite the production of skin lesions in several generalized diseases, only a few viruses shed from these lesions result in successful transmission3. Emphasizing preventive measures, such as minimizing direct contact with infected lesions and enhancing immune response through vaccination, is crucial to control the spread of these viruses.
What are the risk factors that predispose individuals to these infections?
Environmental factors, particularly those influenced by climate and weather, play a significant role in predisposing individuals to infectious agents6. Changes in weather conditions, such as temperature fluctuations and humidity, can affect the prevalence and distribution of infectious diseases, thereby impacting individuals’ susceptibility to infections6. Moreover, genetic predispositions can further increase the risk of contracting infectious diseases, as certain genetic factors may influence an individual’s immune response or susceptibility to specific pathogens6. In addition to environmental and genetic factors, anatomical and physiological characteristics, such as the integrity of skin and mucous membranes, serve as crucial barriers against microbial attacks. Any compromise in these barriers, whether due to injury, medical procedures, or natural anatomical variations, can increase the likelihood of infections6,7. Addressing these risk factors requires a multifaceted approach, including the implementation of public health measures tailored to local environmental conditions, genetic screening where applicable, and maintaining the integrity of anatomical barriers through proper hygiene and medical practices.
Clinical Manifestations of Cutaneous Viral Infections
What are the common symptoms associated with cutaneous viral infections?
Cutaneous viral infections often manifest with a variety of symptoms primarily affecting the skin, but they can also have systemic implications. A common presentation of these infections includes distinctive rashes and lesions, which can vary in appearance from bumps to blisters and are typically self-limited, resolving without intervention8,9. These skin manifestations, while primarily localized, may sometimes be accompanied by broader systemic symptoms, such as fever, headache, and malaise, indicating the body’s response to the viral invasion10,11. Moreover, viral infections like chickenpox and shingles not only cause significant skin eruptions but also engage the entire body’s immune system, leading to a constellation of symptoms that can be more severe11. Additionally, some viral infections may present with less common symptoms such as conjunctivitis, further highlighting the diverse impact of these pathogens on different bodily systems9. While the primary manifestations are cutaneous, the potential for systemic involvement underlines the importance of a comprehensive approach to diagnosis and management, ensuring both skin and systemic symptoms are adequately addressed.
How do different viral infections present uniquely on the skin?
The presentation of viral infections on the skin is diverse and intricately tied to the unique characteristics of each virus and its interaction with the host’s immune system12. For instance, viruses like molluscum contagiosum and verrucae vulgaris can persist in the epidermis for extended periods, highlighting their ability to evade immediate immune responses and remain in a dormant state13. This persistence is indicative of certain evolved viral mechanisms that directly interfere with the host’s innate immune response, adding a layer of complexity to their cutaneous presentation5. Similarly, herpes simplex and herpes zoster viruses exhibit a unique pattern by remaining dormant in the dorsal root ganglia, yet having the potential to reactivate and cause recurrent skin manifestations13. These varying characteristics underscore the need for infection-specific approaches in managing viral skin diseases, highlighting the importance of understanding the complex interplay between viruses and the skin’s immune defenses. Enhanced research into these interactions could facilitate the development of targeted treatments and interventions, minimizing the impact of viral infections on the skin and improving patient outcomes.
What diagnostic methods are used to identify viral infections of the skin?
Diagnostic methods for identifying viral infections of the skin encompass a range of laboratory and clinical techniques, each with specific advantages in effectively confirming the presence of viral pathogens. A skin biopsy remains a fundamental tool, offering invaluable histopathological insights into viral cytopathic effects, such as the multinucleated giant cells or inclusion bodies, which are indicative of viral infections14. In addition, the Tzanck smear is a rapid diagnostic procedure that involves scraping the base of a vesicular lesion and examining it under a microscope to identify herpes virus infections, characterized by the presence of multinucleated giant cells14. Furthermore, laboratory methods including viral culture and detection of viral antigens are integral in virus identification, providing a comprehensive picture of the viral presence through isolating and growing the virus in controlled environments, or revealing specific proteins associated with the virus14. Moreover, molecular diagnostic techniques such as polymerase chain reaction (PCR) assays are highly sensitive and specific, allowing for the detection of viral nucleic acids, thus pinpointing the exact viral strain involved15. These varied diagnostic methods not only facilitate a swift and accurate diagnosis but also inform subsequent treatment decisions, underscoring the critical need for an integrated diagnostic approach to effectively manage viral skin infections.
Treatment Approaches for Cutaneous Viral Infections
What are the standard treatment options for managing cutaneous viral infections?
When managing cutaneous viral infections, a variety of treatment options are available, tailored to the specific virus and severity of the condition. For instance, skin conditions caused by the herpes simplex virus, such as genital herpes, are commonly treated with antiviral medications like acyclovir, valacyclovir, and famciclovir, especially for patients with frequent recurrences16,17. These antiviral agents not only help in reducing the frequency of outbreaks but also aid in alleviating the severity of symptoms during an episode20. Acyclovir, in particular, is noted for its cost-effectiveness in managing such infections, despite the more convenient dosing schedules offered by valacyclovir and famciclovir17. However, in some cases, particularly where the viral skin condition is mild or self-limiting, such as with chickenpox, the use of symptomatic relief measures like calamine lotion may suffice without the need for antiviral drugs16. Notably, many viral skin conditions tend to resolve on their own, with the immune system effectively controlling the infection over time16. Nonetheless, for conditions like recurrent genital herpes, where suppression of outbreaks is desired, the choice of antiviral therapy must be guided by an assessment of the patient’s recurrence rate, the cost of medication, and the potential benefits versus side effects17.
How effective are antiviral medications in treating these infections?
Antiviral medications play a crucial role in managing viral infections, particularly those with cutaneous manifestations such as herpes simplex and papillomaviruses. These medications are designed to inhibit the development of the virus, which helps in reducing both the severity and duration of infections18. For instance, in the case of herpes simplex, early administration of antivirals can significantly decrease the severity of symptoms and the duration of the disease, highlighting the importance of timely intervention19. Additionally, these medications have the potential to prevent severe complications that could arise from untreated infections, further underscoring their significance in clinical settings20. Despite these advantages, it is important to acknowledge that antiviral medications cannot cure the infection or eliminate the virus entirely from the body19. This limitation necessitates ongoing research to develop more comprehensive treatment strategies, especially for viral infections that currently lack effective antiviral therapies20. Consequently, the medical community must continue to explore innovative approaches to enhance the overall efficacy of antiviral treatments and address the challenges posed by emerging viral infections.
DISCUSSION
The findings presented in this research paper underscore the multifaceted nature of cutaneous viral infections, emphasizing the pivotal role of various viruses, particularly herpes simplex virus (HSV) and human papillomavirus (HPV), in dermatological health. The prevalence of HSV in causing oral and genital herpes highlights the need for ongoing public health education and awareness campaigns aimed at preventing transmission, particularly in vulnerable populations. Moreover, the implications of varicella-zoster virus in both childhood chickenpox and adult shingles underline the necessity for robust vaccination programs to mitigate these infections’ impact on public health. The distinct clinical manifestations associated with each viral agent, as delineated in this study, call for tailored diagnostic and therapeutic approaches that consider individual patient factors, such as immune status and genetic predispositions. While antiviral therapies such as acyclovir and valacyclovir have proven effective in managing HSV outbreaks, it is crucial to recognize that many cutaneous viral infections are self-limiting and may not necessitate aggressive treatment. This recognition points to a gap in clinical practice where over-treatment may occur, leading to unnecessary medication use and associated costs. Furthermore, the study highlights the significance of environmental factors and the integrity of skin and mucous membranes as barriers to infection, suggesting that lifestyle modifications and preventive measures could significantly reduce infection rates. Future research should explore the nuances of host-virus interactions, particularly the immune responses that dictate the severity and duration of infections, as well as the exploration of novel therapeutic strategies that may enhance treatment efficacy. Additionally, longitudinal studies are warranted to assess the long-term effectiveness of vaccination and preventive measures in various demographics. By acknowledging these aspects, this discussion contributes to a broader understanding of cutaneous viral infections and emphasizes the importance of a comprehensive, community-oriented approach to prevention and treatment in dermatology.
CONCLUSIONS
- This comprehensive review of cutaneous viral infections underscores the complexity and clinical diversity of viral agents affecting the skin. The most commonly implicated viruses—such as herpes simplex virus (HSV), varicella-zoster virus (VZV), human papillomavirus (HPV), and molluscum contagiosum—demonstrate a broad spectrum of cutaneous manifestations, ranging from self-limited benign lesions to chronic or recurrent infections that significantly affect patient quality of life. These infections are influenced by factors including host immunity, viral strain, and environmental conditions. Early and accurate clinical recognition remains essential for timely intervention and for preventing complications or transmission.
- Etiologically, the reviewed evidence highlights the importance of understanding viral pathogenesis, host-virus interactions, and the role of immune evasion mechanisms. Clinically, the variability in presentations—particularly in immunocompromised individuals—calls for heightened diagnostic awareness and appropriate use of confirmatory tools, such as PCR and serologic testing.
- From a therapeutic standpoint, antiviral agents such as acyclovir and valacyclovir remain the cornerstone for managing HSV and VZV infections, while HPV-related lesions often require procedural treatments like cryotherapy, topical agents, or immunomodulators. However, challenges remain in achieving complete viral clearance, particularly in recurrent or treatment-resistant cases. Vaccination, particularly against HPV and VZV, has proven effective in reducing incidence and recurrence rates, highlighting the importance of prevention strategies in public health.
FUTURE DIRECTIONS
- Future research should aim to deepen the understanding of molecular mechanisms of viral persistence and latency in cutaneous tissues, especially for recurrent infections. The development of novel antiviral therapies with improved efficacy and lower resistance potential is imperative, particularly for emerging and drug-resistant viral strains. Additionally, greater investment in vaccine development for viruses without current prophylactic options (e.g., HSV-1/2) could significantly reduce global disease burden.
- Further studies should also explore the role of host genetic susceptibility, skin microbiome interactions, and immunological biomarkers that could predict disease severity or treatment response. Enhanced diagnostic tools, including rapid point-of-care tests and AI-assisted dermatologic imaging, could improve clinical decision-making, especially in primary care or low-resource settings.
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