Abstract— The purpose of this clinical study was to evaluate the efficacy of orally administered milbemycin oxime (Interceptor®, Ciba‐Geigy, Greensboro, U.S.A.) in the treatment of 46 dogs with chronic generalized demodicosis. Two dosage protocols were followed with milbemycin oxime dosed at 0.5–2.3 mg.kg‐1 once daily (low dose) or twice daily (high dose). Seventy six per cent of the dogs on the low dose protocol achieved negative skin scrapings (remission) within 90 days, 24% were failures, and 19% remain negative with 1 year follow‐ups. Seventy five per cent of the patients that achieved remission on the low dose protocol relapsed within 1 year when the milbemycin was discontinued. Ninety six per cent of the dogs on the high dose protocol achieved negative skin scrapings within 90 days, 4% were failures, and 42% remain negative with 1 year follow‐ups. Twenty nine per cent of the patients that achieved remission on the high dose protocol relapsed within 1 year when the milbemycin was discontinued. Résumé— Le but de cette étude clinique était d'évaluer l'efficacité de la mylbémycine par voie orale (Interceptor®, Ciba Geigy, Greensboro, U.S.A.) dans le traitement de 46 chiens atteints de démodécie généralisée. Deux posologies ont été utilisées: 0.5–2.3 mg.kg‐1 une fois par jour (dose faible) et deux fois par jour (dose forte). Soixante dix ourcent des chiens ayant subi le protocole faible dose ont présenté des raclages cutanés négatifs (rémission) au bout de 90 jours, 24% n'ont jamais répondu et 19%étaient toujours négatifs un an après le traitement. Soixante dix pourcent des animaux ayant répondu à ce traitement ont rechuté dans l'année suivant l'arrêt de la milbémycine. Quatre vingt dix pourcent des chiens ayant subi le protocole à dose forte ont présenté des raclages négatifs au bout de 90 jours, 1% n'ent jamais guéri et 42% sont restés négatifs un en après l'arrêt du traitement. Vingt neuf pourcent des patients ayant guéri à cette posologie ont rechuté dans l'année suivant l'arrêt de la mylbémycine. Zusammenfassung— Das Ziel der vorliegenden Untersuchung war die Ermittlung der Wirksamkeit von oral angewendetem Milbemycinoxim (Interceptor®, Ciba‐Geigy, Greensboro, USA) bei der Behandlung von 46 Hunden mit chronischer generalisierter Demodikose. Bei der Dosierung von Milbemycinoxin wurden zwei Dosierungsprotokolle eingesetzt, bei der niedrigen. Dosierung wurde 0.5–2.3 mg/kg einmal täglich, bei der hohen zweimal täglich verabreicht. 76% der Humde mit der niedrigen Dosierung zeigten negative Hautgeschabsel (Remission) innerhalb von 90 Tagen, 24% sprachen nicht an. Bei 19% der Hunde blieben die Geschabsel negativ bei den Kontrolluntersuchungen über 1 Jahr Dauer. Bei 75% der Patienten, die mit der niedrigen Dosierung zur Remission gebracht wurden, traten Rückfälle innerhalb von 1 Jahr nach Absetzen des Milbemycin auf Bei 96% der Hunde aus der Gruppe mit der hohen Dosierung waren die Hautgeschabsel innerhalb von 90 Tagen negativ, 4% sprachen nicht auf die Behandlung an. Bei 42% der Tiere blieben die Geschabsel negati...

Objective—To determine the efficacy of triamcinolone acetonide topical solution (TTS) in dogs for use in reduction of clinical signs of pruritic inflammatory skin diseases of a known or suspected allergic basis and to evaluate adverse effects associated with TTS administration. Animals—103 pruritic adult dogs with known or suspected allergic skin disease. Procedure—Dogs were treated for 4 weeks with TTS or with vehicle solution (control dogs) in a multiplecenter study. Clinical signs were scored by owners and by examining veterinarians before and after treatment. Blood samples obtained before and after treatment were subjected to routine hematologic and serum biochemical analyses. Results—Treatment success, as defined by an improvement of at least 2 of 6 grades in overall clinical score, was evident in 35 of 52 (67%) TTStreated dogs (mean improvement, 1.98) and 12 of 51 (24%) control dogs (mean improvement, 0.29). For several criteria, TTS was significantly more effective than vehicle in reducing clinical signs. Minor alterations in hematologic determinations in TTS-treated dogs were limited to slightly lower total leukocyte, lymphocyte, and eosinophil counts after treatment. Minor adverse effects were reported by owners in 6 of 52 (12%) TTS-treated and 9 of 51 (18%) control dogs. Conclusions and Clinical Relevance—Triamcinolone used as a spray solution at a concentration approximately one-sixth the concentration of triamcinolone topical preparations currently available for veterinary use is effective for short-term alleviation of allergic pruritus in dogs. Adverse effects are few and mild and, thus, do not preclude prolonged treatment with the solution. (Am J Vet Res 2002;63:408–413)