Scabies is an infestation of the skin by the human itch mite (Sarcoptes scabiei var. hominis). The microscopic scabies mite burrows into the upper layer of the skin where it lives and lays its eggs. The most common symptoms of scabies are intense itching and a pimple-like skin rash. The scabies mite... usually is spread by direct, prolonged, skin-to-skin contact with a person who has scabies.
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Yaws is a chronic tropical skin disease that mainly affects children in remote, tropical and often impoverished areas. The disease presents with highly infectious lesions of the skin which can spread to the cartilage and bone. It is one of three endemic treponenatoses and is caused by the spirochete... bacteria Treponema pallidum subsp. pertenue. Under the proposed World Health Organization’s new NTD Roadmap 2030, yaws has been targeted for global eradication by 2030.
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Chromoblastomycosis (CMB) is a chronic fungal infection of the skin and the subcutaneous tissue caused by a transcutaneous traumatic inoculation of a specific group of dematiaceous fungi occurring mainly in tropical and subtropical zones worldwide. If not diagnosed at early stages, patients with CBM... require long term therapy with systemic antifungals, sometimes associated with physical methods. Unlike other neglected endemic mycoses, comparative clinical trials have not been performed for this disease. Nowadays, therapy is based on a few open trials and on expert opinion. Itraconazole either as monotherapy or associated with other drugs, or with physical methods, is widely used. Recently, photodynamic therapy has been successfully employed in combination with antifungals in patients presenting with CBM. In the present revision the most used therapeutic options against CBM are reviewed as well as the several factors that may have impact on the patient's outcome.
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Cutaneous leishmaniasis is a painful disease that exerts a serious toll on societies around the world that are afflicted by it. Although not life-threatening, the skin ulcers and scars it causes can lead to isolation and psychosocial pathologies due to social stigma, and its occurrence is often asso...ciated with regional conflicts.
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Scabies is caused by Sarcoptes scabiei, a mite which lays its eggs under the surface of your skin and reproduces. When the eggs hatch, mites crawl out onto your skin and make new burrows.
The mites can be difficult to identify and may be confused with pubic lice as both conditions cause itching in ...the genital area.
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Human scabies is caused by an infestation of the skin by the human itch mite (Sarcoptes scabiei var. hominis). The microscopic scabies mite burrows into the upper layer of the skin where it lives and lays its eggs.
Scabies is found worldwide and affects people of all races and social classes. Scabi...es can spread rapidly under crowded conditions where close body and skin contact is frequent. Institutions such as nursing homes, extended-care facilities and prisons are often sites of scabies outbreaks. Child care facilities also are a common site of scabies infestations.
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Current Tropical Medicine Reports (2018) 5:247–256 https://doi.org/10.1007/s40475-018-0166-2 .Purpose of the Review Buruli ulcer (BU) is a necrotizing and disabling cutaneous disease caused by Mycobacterium ulcerans, one of the skin-related neglected tropical diseases (skin NTDs). This article aim...s to review the current knowledge of this disease and challenges ahead.
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Yaws, a neglected tropical disease (NTD) of the skin caused by the bacterium Treponema pallidum subspecies pertenue, is targeted in the latest WHO NTD Roadmap for eradication by 2030. In January, 2022, WHO published a manual that outlines the key activities that Ministries of Health in endemic count...ries should undertake to achieve this goal. The aim of the manual is to provide guidance on surveillance and evaluation of yaws as programmes progress towards eradication. However, yaws eradication in Africa faces several challenges.
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A dermatologist can often diagnose scabies by visually examining a patient’s skin from head to toe.
To make sure that a patient has scabies, a dermatologist may remove some skin. This is painless. Your dermatologist will put the skin on a glass slide and look at the slide under a microscope. If y...our dermatologist sees scabies mites or their eggs, it is certain that you have scabies.
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Buruli ulcer is a chronic, progressive skin disease caused by infection with Mycobacterium ulcerans. It is currently considered to be one of the neglected tropical diseases; less common than tuberculosis but more common than leprosy. The initial lesion is a painless subcutaneous nodule, usually less... than 5 cm diameter and adherent to skin. The nodule typically breaks down centrally after days to weeks forming an ulcer with undermined edges. Thus, the external appearance of the ulcer underestimates the true size of the affected area. The patient remains well and there is no pain unless secondary bacterial infection occurs. Other forms of M. ulcerans disease include a firm plaque lesions that behaves in the same way as the nodule or an oedematous lesion that is more aggressive and extends rapidly resulting in a very large ulcer.
Any age group can be affected by Buruli ulcer diseases, but the incidence peaks at 5 to 15 years. Ulcers are most frequently on the limbs but can be on the trunk or head, sometimes with catastrophic consequences such as loss of sight or loss of breast or genital tissue. Healing close to a joint can result in contracture, and sometimes there is so much tissue destruction on a limb that amputation is unavoidable. Occasionally osteomyelitis occurs in bone adjacent to a skin lesion but involvement of other organs is rare. Disseminated disease with HIV has been reported.
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Psoriasis, which can involve the skin, nails and joints, is a chronic, painful, disfiguring and disabling noncommunicable disease (NCD) for which there is no cure. It negatively impacts on quality of life. Some of those who suffer from the disease develop chronic, inflammatory arthritis (psoriatic a...rthritis) that leads to joint deformations and disability. People with psoriasis are also reported to be at increased risk of developing other serious clinical conditions such as cardiovascular and other NCDs
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Cutaneous Leishmaniasis (CL) is a painful disease that exerts a serious toll on societies around the world that are afflicted by it. Although not life-threatening, the skin ulcers and scars it causes can lead to isolation and psychosocial pathologies due to social stigma, and its occurrence is often... associated with regional conflicts. The Cutaneous Leishmaniasis Research Meeting was held on December 7, 2020, with participation by basic researchers, clinical researchers, and drug discovery experts involved in research and development related to CL under the auspices of the Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine. In addition, the CL Webinar was held on March 5, 2021, hosted by the Graduate School of Tropical Medicine and Global Health, co-hosted by the Institute of Tropical Medicine, and supported by Médecins Sans Frontières and DNDi.
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Cutaneous Leishmaniasis (CL) is a painful disease that exerts a serious toll on societies around the world that are afflicted by it. Although not life-threatening, the skin ulcers and scars it causes can lead to isolation and psychosocial pathologies due to social stigma, and its occurrence is often... associated with regional conflicts. The Cutaneous Leishmaniasis Research Meeting was held on December 7, 2020, with participation by basic researchers, clinical researchers, and drug discovery experts involved in research and development related to CL under the auspices of the Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine. In addition, the CL Webinar was held on March 5, 2021, hosted by the Graduate School of Tropical Medicine and Global Health, co-hosted by the Institute of Tropical Medicine, and supported by Médecins Sans Frontières and DNDi.
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Cutaneous Leishmaniasis (CL) is a painful disease that exerts a serious toll on societies around the world that are afflicted by it. Although not life-threatening, the skin ulcers and scars it causes can lead to isolation and psychosocial pathologies due to social stigma, and its occurrence is often... associated with regional conflicts. The Cutaneous Leishmaniasis Research Meeting was held on December 7, 2020, with participation by basic researchers, clinical researchers, and drug discovery experts involved in research and development related to CL under the auspices of the Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine. In addition, the CL Webinar was held on March 5, 2021, hosted by the Graduate School of Tropical Medicine and Global Health, co-hosted by the Institute of Tropical Medicine, and supported by Médecins Sans Frontières and DNDi.
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Leishmaniasis is among the most neglected diseases. The most common form is cutaneous leishmaniasis that forms lesions on the skin.
The only treatment available for cutaneous leishmaniasis is highly toxic. In some cases, patients have died because of the treatment, even though cutaneous leishmania...sis is not fatal.
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Cutaneous Leishmaniasis (CL) is a painful disease that exerts a serious toll on societies around the world that are afflicted by it. Although not life-threatening, the skin ulcers and scars it causes can lead to isolation and psychosocial pathologies due to social stigma, and its occurrence is often... associated with regional conflicts. The Cutaneous Leishmaniasis Research Meeting was held on December 7, 2020, with participation by basic researchers, clinical researchers, and drug discovery experts involved in research and development related to CL under the auspices of the Joint Usage/Research Center on Tropical Disease, Institute of Tropical Medicine. In addition, the CL Webinar was held on March 5, 2021, hosted by the Graduate School of Tropical Medicine and Global Health, co-hosted by the Institute of Tropical Medicine, and supported by Médecins Sans Frontières and DNDi.
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Human scabies is a parasitic infestation caused by Sarcoptes scabiei var hominis. The microscopic mite burrows into the skin and lays eggs, eventually triggering a host immune response that leads to intense itching and rash. Scabies infestation may be complicated by bacterial infection, leading to t...he development of skin sores that, in turn, may lead to the development of more serious consequences such as septicaemia, heart disease and chronic kidney disease. In 2017, scabies and other ectoparasites were included as Neglected Tropical Diseases (NTDs), in response to requests from Member States and the recommendations of the WHO Strategic and Technical Advisory Group for NTDs.
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Key facts
Buruli ulcer is a chronic debilitating disease caused by an environmental Mycobacterium ulcerans.
At least 33 countries with tropical, subtropical and temperate climates have reported Buruli ulcer in Africa, South America and Western Pacific regions.
It often affects the skin an...d sometimes bone and can lead to permanent disfigurement and long-term disability.
The mode of transmission is not known and there is no prevention for the disease.
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The Lancet olume 395, ISSUE 10232, P1259-1267, April 18, 2020. Buruli ulcer is a neglected tropical disease caused by Mycobacterium ulcerans infection that damages the skin and subcutis. It is most prevalent in western and central Africa and Australia. Standard antimicrobial treatment with oral rifa...mpicin 10 mg/kg plus intramuscular streptomycin 15 mg/kg once daily for 8 weeks (RS8) is highly effective, but streptomycin injections are painful and potentially harmful. We aimed to compare the efficacy and tolerability of fully oral rifampicin 10 mg/kg plus clarithromycin 15 mg/kg extended release once daily for 8 weeks (RC8) with that of RS8 for treatment of early Buruli ulcer lesions.
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Nat Commun 9, 5370 (2018). https://doi.org/10.1038/s41467-018-07804-8. Mycobacterium ulcerans is the causative agent of Buruli ulcer, a neglected tropical skin disease that is most commonly found in children from West and Central Africa. Despite the severity of the infection, therapeutic options are... limited to antibiotics with severe side effects. Here, we show that M. ulcerans is susceptible to the anti-tubercular drug Q203 and related compounds targeting the respiratory cytochrome bc1:aa3. While the cytochrome bc1:aa3 is the primary terminal oxidase in Mycobacterium tuberculosis, the presence of an alternate bd-type terminal oxidase limits the bactericidal and sterilizing potency of Q203 against this bacterium. M. ulcerans strains found in Buruli ulcer patients from Africa and Australia lost all alternate terminal electron acceptors and rely exclusively on the cytochrome bc1:aa3 to respire. As a result, Q203 is bactericidal at low dose against M. ulcerans replicating in vitro and in mice, making the drug a promising candidate for Buruli ulcer treatment.
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