Dermatological disorders are among the most prevalent manifestations of HIV infection/acquired immunodeficiency syndrome (AIDS). In this review, we aimed to characterize the various dermatologic presentations among HIV-infected patients with a detailed categorization of the mucocutaneous signs and symptoms, their etiopathogenic factors, and clinical management. In fact, cutaneous manifestations of HIV are quite various, ranging from AIDS-specific skin eruptions (xerosis, pruritic papular eruptions, eosinophilic folliculitis, and acne), opportunistic infections (herpes simplex, molluscum contagiosum, cutaneous leishmaniasis, bacillary angiomatosis, disseminated histoplasmosis, disseminated cryptococcosis, and zoster) to AIDS-related malignancies (Kaposi’s sarcoma, lymphoma, and nonmelanoma skin cancers) and antiretroviral therapy (ART)-associated drug eruptions. We tried to classify HIV-related cutaneous presentations which can help clinicians for a better understanding of the various specific and nonspecific features of AIDS-associated cutaneous manifestations and management of the condition.

Coronavirus disease 2019 (COVID‐19) caused by severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2) has become a significant health problem globally. The virus has spread widely and become a global pandemic. The pathophysiology for SARS‐CoV‐2 has not been explained clearly. It has been associated with several multiorgan symptoms, among which its dermatological manifestations are of great interest. Primarily, there has been no report of skin features among COVID‐19 patients. Nevertheless, recently there have been several reports regarding COVID‐19 patients who presented with cutaneous manifestations. In the current review, we focus on the various cutaneous manifestations of COVID‐19 infection.

Coronavirus disease 2019 (COVID‐19) vaccines significantly impacted world health and well‐being. However, various adverse events have been observed following severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) vaccination. Cutaneous reactions have been prevalent following many vaccines, including COVID‐19 vaccines. Here, we present a case of new‐onset lichen planus in a patient who received the COVID‐19 vaccine at the same time as being infected with SARS‐CoV‐2. A 52‐year‐old woman presented to the clinic with extensive pruritic skin lesions. The eruptions had appeared a week after her second dose of the Sinopharm COVID‐19 vaccine. She mentioned a history of SARS‐CoV‐2 infection approximately 10 days following the first dose of her vaccine, causing a 1‐month delay in getting the second dose. Her past medical history was not significant. On examination, erythematous and squamous papules were demonstrated predominantly on the extremities, including inguinal and axillary folds. Moreover, desquamation of the lips was visible, and buccal lesions were also found. After consultation with a dermatologist, a skin biopsy was indicated for the patient, but she refused to undergo the procedure. Therefore, considering the typical appearance of the eruptions, lichen planus was suspected, for which she was treated with oral antihistamines and topical corticosteroids.

Background SARS-COV2 vaccines were approved without long-term monitoring due to emergent situations. This has raised some issues about timing and protocol of receiving vaccines in specific situations such as patients receiving immunomodulatory agents including rituximab which is widely used for various disorders such as multiple sclerosis, pemphigus and many rheumatologic disorders. Case presentation We described two cases of pemphigus vulgaris (a new case and one with flare-up) following vaccination with Astrazeneca in Iran and reviewed the existing data in this regard through searching on PubMed, Google Scholar and Scopus. All of the relevant papers published until June 28, 2021, which we could access their full-texts were included. Results We found some recommendations made by rheumatologists, neurologists and dermatologists in regard to vaccination timing in this group of patients and tried to summarize them to provide a practical guide for clinicians. Conclusion Clinicians should perform a careful, individualized risk–benefit assessment for their patients and consider a delay in RTX administration after completion of COVID vaccination if there is not any considerable risk of disease relapse or organ failure. Moreover, choosing vaccines with potential of providing protection after single dose, especially in countries with limited access to vaccines may be a reasonable approach.

Introduction: The various cutaneous manifestations have lately appeared in the setting of COVID‐19. Psoriasis flare‐ups have been reported during a COVID‐19 infection.Case presentation: We present a case of a 32‐year‐old woman with COVID‐19 who presented with generalized pustular psoriasis. She received oral prednisolone, hydroxyzine, and topical clobetasol. The patient received follow‐up two weeks later and found that her lesions were favorably desquamating.Methods: The PubMed, SCOPUS, and ISI Web of Science databases were thoroughly searched for English studies reporting psoriasis flare‐ups following SARS‐CoV‐2 infection. Ten case reports/series were included after screening.Conclusions: Our case report brings awareness to clinicians for the possible cutaneous manifestation of COVID‐19, which should be considered part of the differential diagnoses.