Cutaneous anthrax
Definition
Cutaneous anthrax is an infection of the skin due to direct contact with the bacteria Bacillus anthracis.
Cutaneous anthrax
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Cutaneous anthrax Symptoms
Review Date: 05/30/2009
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine; Jatin M.
Cutaneous anthrax is an infection of the skin due to direct contact with the bacteria Bacillus anthracis.
Causes ...
Cutaneous anthrax occurs when anthrax touches a cut or scrape on the skin.
Inhalation anthrax develops when anthrax spores enter the lungs through the respiratory tract.
Gastrointestinal anthrax occurs when someone eats anthrax-tainted meat.
Cutaneous anthrax. This form of anthrax infects the skin. It's contracted by direct contact with the bacterium, when anthrax spores enter a cut, blister or abrasion on your skin.
Cutaneous anthrax - skin is the most commonly affected body part, occurring in about 95 per cent of cases. The bacteria get into the body via a cut or graze. The skin becomes itchy then develops a sore that turns into a blister.
Cutaneous anthrax usually begins as a small, raised bump that might itch. The incubation period is usually 5 to 7 days, but it may be longer.
Cutaneous anthrax
In this form of anthrax, the spores enter your body through a cut or other sore on your skin. Cutaneous infections generally form within the site of spore penetration between 2 and 5 days after exposure.
Cutaneous anthrax. This form infects the skin, causing a sore with a black center. It occurs when a cut, blister or other skin wound comes into contact with anthrax spores.
CUTANEOUS ANTHRAX
Cutaneous anthrax is caused when spores of B. anthracis are introduced into the skin through cuts or abrasions or by biting flies. The spores germinate within hours, and the vegetative cells multiply and produce anthrax toxin.
Cutaneous anthrax: Cutaneous or skin anthrax infections are the most common form, occurring in approximately 95% of cases.
Cutaneous anthrax begins as a painless, pruritic, red-brown papule 1 to 10 days after exposure to infective spores. The papule enlarges with a surrounding zone of brawny erythema and marked edema. Vesiculation and induration are present.
Cutaneous anthrax
Ulcer is painless
Ulcer and eschar surrounded by characteristic non-pitting edema
There is no evidence of other thrombotic conditions ...
Cutaneous Anthrax
Gastrointestinal Anthrax
Inhalational Anthrax
Anthrax is an acute infectious disease caused by the spore-forming bacterium Bacillus anthracis. It is usually a disease of wild and domestic animals, including cattle, sheep, and goats.
Cutaneous anthrax begins as a small pimplelike lesion (a sore) that enlarges in 24-48 hours to form a "malignant pustule" at the site of the infection. This sore (about 2-3 cm or about an inch) is round with a raised edge. The sore is not painful.
CUTANEOUS ANTHRAX
The cutaneous (skin) form of anthrax starts as a red-brown raised spot that enlarges with considerable redness around it, blistering, and hardening.
Cutaneous anthrax
Pulmonary anthrax
Gastrointestinal anthrax
In early infection: ...
Cutaneous anthrax is the most common form of the disease and is characterized by the development of a localized skin lesion with a central lesion surrounded by marked edema (swelling).
With treatment, cutaneous anthrax is not fatal. Although 20 percent might seem high, the fatality rate of untreated inhalation anthrax approaches 100 percent.
A. 10 percent B. 20 percent C. 50 percent D. 80 percent E. 99 percent ...
By far the most common form is cutaneous anthrax. The small, erythematous, maculopapular lesion is initially painless. It may subsequently vesiculate and ulcerate, with formation of a central black eschar.
Cutaneous anthrax is contracted through cuts on the skin. It is characterized by a small sore which turns into a blister with a black center. Cutaneous anthrax has a relatively high survival rate, especially if it is caught early.
Cutaneous anthrax begins as a blister on the skin that, within two to six days, develops into a vesicle which, when ruptured, reveals a depressed ulcer covered by a black eschar, or scab.
Several antibiotics are effective in cutaneous anthrax, notably doxycycline (and some other antibiotics of the tetracycline class), erythromycin, penicillin and ciprofloxacin.
* entering broken skin and germinating there to cause cutaneous anthrax;
* being inhaled and germinating in the lungs to cause inhalation anthrax; or
* being eaten and germinating in the gastrointestinal tract to cause gastrointestinal anthrax.
Botfly infestation
Cutaneous anthrax
Folliculitis
Fungal infection (tinea)
Herpes simplex infection
Hidradenitis suppurativa
Infected sebaceous or epithelial inclusion cyst
Ruptured epidermoid or pilar cysts ...
an eschar is a slough or piece of dead tissue that is cast off from the surface of the skin, particularly after a burn injury, but also seen in gangrene, ulcer, fungal infections, necrotizing spider bite wounds, and exposure to cutaneous anthrax.
Anthrax as a Bioterrorism Agent (PowerPoint: 6.4MB/29 slides) (PDF: 491KB/29 pages)
Technical slide show discussing the ways that anthrax can be used as a bioterrorism agent, including both inhalation anthrax and cutaneous anthrax.
The species name anthracis is from the Greek anthrakis ("νθραξ), meaning coal and referring to the most common form of the disease, cutaneous anthrax, in which large black skin lesions are formed.
Where the bacteria are common, human infection remains uncommon. Humans are relatively resistant, but the spores may gain access through even tiny breaks in the skin. Cutaneous anthrax is easy to cure if it is treated early with appropriate ...
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 See also: Anthrax, Symptom, Death, Fever, Bacillus anthracis
  
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