Cases reported "Dermatitis"

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1/3. Localized tick bite reaction.

    A woman presented with a localized tick bite reaction. The tick (Amblyomma americanum, the "lone star" tick) was still attached to the erythematous, indurated skin of the upper back. After several unsuccessful attempts at removal, a punch biopsy was performed, and the resultant histologic sections incorporated both tick and involved skin. The various systemic and localized tick bite reactions are discussed, as are the diagnostic dilemmas which may arise when the organism is no longer present. Punch biopsy is suggested as an effective means of removing the organism.
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keywords = tick
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2/3. lyme disease: additional evidence of widespread distribution. Recognition of a tick-borne dermatitis-encephalitis-arthritis syndrome in an area of known ixodes tick distribution.

    lyme disease is a process of unknown etiology that has been linked to bites of ticks of the ixodes ricinus complex. Central minnesota is an area of known ixodes dammini distribution. This case represents the first recognition of lyme disease from this area. This case presented as a fluctuating meningoencephalitis with superimposed cranial neuropathy. The characteristic skin lesion, erythema chronicum migrans, was recognized by history, and oligoarticular arthritis subsequently developed. physicians practicing in areas of known ixodes tick distribution outside of the northeastern united states (coastal areas of oregon and california, central minnesota, northwestern wisconsin, northwestern utah, certain parts of ontario) should be alert to this disease and aware fo the variety of symptom complexes that are possible with it.
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keywords = tick
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3/3. skin manifestations caused by pigeon ticks (argas reflexus).

    Three adult patients (one woman and two men) presented with polymorphous skin manifestations caused by pigeon ticks (argas reflexus). These manifestations were characterized by wheals with a central hemorrhagic point in the first patient, crusted-ulcerative lesions in the second, and pustular lesions in the third patient. We observed specific IgE against a somatic extract (antigen A) and the saliva (antigen B) of A. reflexus in two patients.
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keywords = tick
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