A Boxer bitch aged 8 years had a chronic progressive cutaneous eruption of 5 months' duration. Histologically there was diffuse infiltration of the dermis, epidermis and adnexal structures by histiocytic cells. There was no evidence, at necropsy, of the presence of lymphosarcoma, mastocytoma, or histiocytoma.The lesions are compared with those of mycosis fungoides in man.
In an attempt to establish a colony of atopic dogs as a research resource, dogs with seasonal dermatitis – a reported manifestation of naturally occurring allergy in that species – were identified, acquired, and inbred. Progeny were studied during their first 2 years of life to determine if the trait could be genetically transmitted and to investigate the hypothesis that this spontaneously occurring dermatitis correlates with positive laboratory measurements for specific IgE to airborne allergens. (Serial immunoglobulin levels, including total IgE, end-point titration of histamine, and results of fecal examinations for identification of parasites were also investigated and are to be the subject of a separate publication.) Only a weak correlation between positive direct skin test results and the appearance of seasonal dermatitis was found in initial studies. Neither the results of testing by passive cutaneous anaphylaxis nor radioallergosorbent procedures correlated with positive clinical findings. Independently conducted clinical examinations and direct skin testing using selected antigens, as well as additional bronchial challenges of representative animals from the colony, also failed to furnish evidence of atopy in the dogs. Therefore, the goal of establishing an inbred line of atopic animals was not accomplished within the allotted 2-year period. Also, the data did not show a positive correlation between the seasonal dermatitis and measurements for specific IgE to airborne allergens.
Scabies occurred in three nursing homes (two in Missouri and one in Pennsylvania) where the diagnosis was obscured by a lack of the usual clinical signs. Topical steroids can aggravate scabies and help to confirm the diagnosis; treatment with lindane lotion is successful, provided all patients and health personnel are treated.
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