<\/span><\/h2>\nCutaneous tuberculosis (TB) is essentially an invasion of the skin by Mycobacterial tuberculosis<\/em>, the same bacteria<\/span> causing TB of the lungs (pulmonary<\/span> TUBERCULOSIS). Cutaneous TB is a relatively rare form of extrapulmonary TB (TB infection<\/span> of other organs and tissues). Even in countries like India and China, where TB still occurs commonly, skin outbreaks are rare (<0.1%).<\/p>\n<\/span>Types of cutaneous tuberculosis<\/span><\/h2>\nThere are several different types of cutaneous TB. Direct skin infection or mucous<\/span> membranes from an external source of mycobacteria result in an initial injury<\/span> called the tubercular chancre. Cankers are firm and shallow. ulcers<\/span> With a granular base. They appear about 2-4 weeks after the mycobacteria enter through the broken skin. The patient's immune response and the virulence of the mycobacteria determine the type and severity of skin tuberculosis.<\/p>\n\n\n\n| Types of cutaneous tuberculosis<\/th>\n | Characteristics<\/th>\n<\/tr>\n |
\n| TB verrucosa skin<\/span>\n<\/td>\n | \n\n- Occurs after direct inoculation<\/span> TB on the skin in someone who has previously been infected with mycobacteria<\/li>\n
- It appears as a purple or reddish-brown color. warty<\/span> increase<\/li>\n
- Injuries most often occur to the knees, elbows, hands, feet, and buttocks.<\/li>\n
- Lesions can persist for years, but can disappear even without treatment.<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
\n| Vulgar lupus<\/td>\n | \n\n- Persistent and progressive<\/span> form of cutaneous tuberculosis<\/li>\n
- Small, well-defined, reddish-brown lesions with a jelly-like consistency (called apple jelly nodules<\/span>)<\/li>\n
- Lesions persist for years, leading to disfigurement and sometimes the skin. Cancer<\/span>\n<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
\n| Scrofuloderma<\/td>\n | \n\n- Skin lesions result from the direct extension of the underlying TB infection from lymph nodes<\/span>, bone or joints<\/li>\n
- Often associated with TB of the lungs<\/li>\n
- Firm, painless lesions that eventually ulcerate with a granular base.<\/li>\n
- It can heal even without treatment, but this takes years and leaves unsightly scars<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
\n| \nMiliary<\/span> tuberculosis<\/td>\n | \n\n- \nChronic<\/span> Tuberculosis infection that has spread from primary<\/span> infection (usually in the lungs) to other organs and tissues through the bloodstream<\/li>\n
- Skin lesions are small red spots (about the size of a millet) that turn into ulcers and abscesses.\n<\/li>\n
- Most likely in immunocompromised<\/span> patients, p. ex. HIV<\/span>, AIDS, cancer<\/li>\n
- The patient is generally ill.<\/li>\n
- \nForecast<\/span> is poor (many patients die even if diagnosed and treated)<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
\n| Tuberculous<\/td>\n | \n\n- \nGeneralized<\/span> exanthema<\/span> in patients with moderate or high immunity to tuberculosis from previous infection<\/li>\n
- Generally in good health with no identifiable focus of active TB on the skin or elsewhere<\/li>\n
- \nErythema<\/span> induratum (Bazin's disease) occurs as recurrent nodules or lumps on the back of the legs (mainly female) that may ulcerate and scar<\/span>. It is a kind of nodular<\/span> vasculitis<\/span>.<\/li>\n
- The papulonecrotic tuberculid produces cultures of recurrent<\/span> crusted skin papules<\/span> on knees, elbows, buttocks, or lower trunk that heal with scars after about 6 weeks.<\/li>\n
- Lichen scrofulosorum is an extender eruption<\/span> when I was little follicular<\/span> papules in young people with underlying tuberculosis.<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n
<\/span>Cutaneous tuberculosis<\/span><\/h5>\n<\/section>\n\n\n \n  \n<\/div>\n Vulgar lupus<\/p>\n \n  \n<\/div>\n Vulgar lupus<\/p>\n \n  \n<\/div>\n Erythema induratum<\/p>\n \n  \n<\/div>\n Miliary cutaneous tuberculosis<\/p>\n \n  \n<\/div>\n Tuberculosis innovation<\/p>\n \n  \n<\/div>\n Tuberculosis verrucosa cutis<\/p>\n \n  \n<\/div>\n Scrofuloderma<\/p>\n \n  \n<\/div>\n Erythema induratum<\/p>\n \n  \n<\/div>\n Scrofuloderma<\/p>\n<\/p><\/div>\n<\/section>\n <\/div>\n See more images of tuberculosis ...<\/p>\n \n \n \n \n<\/div><\/div><\/div><\/div>\n <\/span>What tests are available?<\/span><\/h2>\nThe diagnosis is usually made or confirmed by characteristics histopathological<\/span> features on the skin biopsy<\/span>. Typical tubers are caseating epithelioid<\/span> granulomas<\/span> containing acid-fast bacilli. These are detected by tissue staining, culture<\/span> and Polymerase chain reaction<\/span> (PCR<\/span>)<\/p>\nOther tests that may be necessary include:<\/p>\n \n- Tuberculin skin test (Mantoux test or PPD)<\/li>\n
- Gamma interferon release assay blood test<\/li>\n
- \nSputum<\/span> culture (may take a month or more for results to be reported)<\/li>\n
- Chest X-ray and others radiological<\/span> extrapulmonary infection tests.<\/li>\n
- Interferon Gamma Release Assays (IGRA)<\/li>\n<\/ul>\n\n
<\/span>Severe Mantoux test reactions (active TB)<\/span><\/h5>\n<\/section>\n\n\n \n  \n<\/div>\n Mantoux test reaction<\/p>\n \n  \n<\/div>\n Mantoux test reaction<\/p>\n \n  \n<\/div>\n Mantoux test reaction<\/p>\n \n  \n<\/div>\n Mantoux test reaction<\/p>\n<\/p><\/div>\n<\/section>\n <\/div>\n <\/span>What is the treatment for skin tuberculosis?<\/span><\/h2>\nPatients with pulmonary or extrapulmonary tuberculosis should be treated with antituberculous drugs. This usually involves a combination of antibiotics (isoniazid, rifampin, pyrazinamide, and ethambutol) given over a period of several months, and sometimes years.<\/p>\n Patients with latent<\/span> TB infection but without active disease can also be treated with anti-TB drugs to prevent the development of active disease. See tuberculosis test.<\/p>\nOccasionally surgical excision<\/span> of located<\/span> Cutaneous TB is recommended.<\/p>\n<\/section>","protected":false},"excerpt":{"rendered":"Que es cut\u00e1neo \u00bftuberculosis? La tuberculosis cut\u00e1nea (TB) es esencialmente una invasi\u00f3n de la piel por Tuberculosis micobacteriana, lo mismo bacterias que causan TB de los pulmones (pulmonar TUBERCULOSIS). La…<\/p>","protected":false},"author":8,"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"footnotes":""},"categories":[204],"tags":[],"class_list":["post-6651","wiki","type-wiki","status-publish","format-standard","category-glosario-definiciones"],"_links":{"self":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/wiki\/6651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/types\/wiki"}],"author":[{"embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/comments?post=6651"}],"version-history":[{"count":0,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/wiki\/6651\/revisions"}],"wp:attachment":[{"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/media?parent=6651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/categories?post=6651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/doctorhoogstra.com\/en\/wp-json\/wp\/v2\/tags?post=6651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} | | | | |