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Cat-scratch disease (CSD) is an infectious disease that most often results from a scratch or bite of a cat. [4] Symptoms typically include a non-painful bump or blister at the site of injury and painful and swollen lymph nodes. [2] People may feel tired, have a headache, or a fever. [2] Symptoms typically begin within 3–14 days following ...
Transmission to humans is thought to occur via flea feces inoculated into a cat scratch or bite, and transmission between cats occurs only in the presence of fleas. Therefore, elimination and control of fleas in the cat's environment are key to prevention of infection in both cats and humans.
Patients can develop two clinical phases: an acute septic phase and a chronic eruptive phase associated with skin lesions. [3] In the acute phase (also known as Oroya fever or fiebre de la Oroya), B. bacilliformis infection is a sudden, potentially life-threatening infection associated with high fever and decreased levels of circulating red blood cells (i.e., hemolytic anemia) and transient ...
Their bites take the form of flat, red patches or raised, red bumps, and they sometimes might even become blisters or pustules. Chiggers often bite the ankles, wrists, thighs, groin, and waist.
Kittens in particular are more likely to be infected with and pass along CSD, and are also considered more likely to scratch and bite a human while playing compared to an older cat.
Bartonella henselae, formerly Rochalimæa henselae, is a bacterium that is the causative agent of cat-scratch disease [1] (bartonellosis). Bartonella henselae is a member of the genus Bartonella, one of the most common types of bacteria in the world. [specify] It is a facultative intracellular microbe that targets red blood cells.
Pustule: A pustule is a small elevation of the skin usually consisting of necrotic inflammatory cells. [30] Cyst: A cyst is an epithelial-lined cavity. [10] Wheal: A wheal is a rounded or flat-topped, pale red papule or plaque that is characteristically evanescent, disappearing within 24 to 48 hours.
Ecthyma gangrenosum is a type of skin lesion characterized by vesicles or blisters, which rapidly evolve into pustules and necrotic ulcers with undermined tender erythematous border. " Ecthyma " means a pus-forming infection of the skin with an ulcer, "gangrenosum" refers to the accompanying gangrene or necrosis.