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Currently, ulcerative sexually transmitted infections, including syphilis, herpes simplex virus (HSV), lymphogranuloma venereum (LGV), chancroid, donovanosis and, more recently, monkeypox (MPOX), represent a growing challenge for health care professionals. The incidence of syphilis and LGV has increased in recent years in Spain. Additionally, HSV, syphilis and chancroid can also increase the risk of HIV acquisition and transmission. The population groups most vulnerable to these infections are young people, men who have sex with men (MSM) and commercial sex workers.It is important to make a timely differential diagnosis since genital, anal, perianal, and oral ulcerative lesions may pose differential diagnosis with other infectious and non-infectious conditions such as candidiasis vulvovaginitis, traumatic lesions, carcinoma, aphthous ulcers, Behçet's disease, fixed drug eruption, or psoriasis. For this reason, the dermatologist plays a crucial role in the diagnosis and management of sexually transmitted infections.This chapter presents the main epidemiological, clinical and therapeutic features associated with these infections., (Copyright © 2024 AEDV. Publicado por Elsevier España, S.L.U. All rights reserved.)

Background: Dermatologic care was halted because of the coronavirus disease 2019 pandemic, prompting us to study the usefulness of direct-to-patient teledermatology via a mobile application. We aimed to evaluate the service as a tool for avoiding face-to-face consultations, describe the main conditions diagnosed, and assess levels of patient and physician satisfaction., Material and Method: Prospective descriptive study of new patients who met the inclusion criteria. Descriptive statistics for all variables were analyzed with SPSS., Results: Of the 1,497 patients who agreed to participate in the study, 25% (n=374) sent an image to a consultant dermatologist through the mobile application. Sixty-four patients (17%) were discharged directly and referred to primary care for follow-up. A face-to-face consultation was avoided for at least 3 months in 85% of patients (n=318); 87.1% (n=325) received a diagnosis and the dermatologist's level of confidence in this diagnosis was 7 or higher in 77.5% of cases (n=290). The quality of the images sent was considered sufficient in 52.1% of cases. Patients rated their satisfaction with a score of 4.5 out of 5. Eleven of the 16 dermatologists rated their satisfaction as good overall. The most common conditions were inflammatory and melanocytic lesions. The main diagnoses were nevi, acne, and eczema., Discussion: Direct-to-patient store-and-forward teledermatology is an effective means of evaluating new patients. Both clinicians and patients expressed high levels of satisfaction with the service. Systems enabling the addition of digital images to patient records are necessary to ensure the efficiency of teledermatology., (Copyright © 2020 AEDV. Publicado por Elsevier España, S.L.U. All rights reserved.)