Dermatology Workup (Grade A)Security-tested data-ai skill for Claude AI. Grade A. Diagnostic ladder (cytology→scraping→DTM→biopsy), pruritus scoring, common differentials by species (atopy, flea allergy, food allergy, Demodex, S

Dermatology Workup is a security-tested data-ai skill for Claude AI, graded A. It provides an evidence-based diagnostic progression for pruritic and alopecic dermatologic cases in dogs, cats, and exotics. The tool guides users through a diagnostic ladder, starting with non-invasive techniques such as cytology, skin scraping, and DTM culture, and progressing to more invasive methods like skin biopsy. It includes pruritus quantification using Visual Analog Scale (VAS) and Canine Pruritus Assessment Tool (CPAT), and offers differential diagnosis by species, including common conditions like atopy, flea allergy dermatitis, food allergy, Demodex, Sarcoptes, and Malassezia. The tool also covers treatment tiers and multimodal treatment strategies. The diagnostic ladder consists of four main steps: 1. Cytology, which is a first-line, non-invasive technique that can detect cocci, yeast, and bacteria, but not Demodex or Sarcoptes. 2. Skin scraping, which is a second-line technique used to detect Demodex and Sarcoptes mites. 3. Dermatophyte Test Medium (DTM) culture, which takes 2-3 weeks to produce results and is used to detect fungal infections. 4. Skin biopsy, which is a definitive diagnostic method used for refractory cases, suspected autoimmune disorders, and chronic scaling. The tool also provides information on common differentials by species. For dogs, these include atopic dermatitis, flea allergy dermatitis, food allergy, Demodex canis, and Sarcoptes scabiei. For cats, these include atopy, flea allergy dermatitis, food allergy, Demodex cati, and Sarcoptes. It considers Malassezia overgrowth in the context of atopy, seborrhea, otitis, and maceration, and provides guidance on diagnosis and management. The tool is suitable for veterinarians and veterinary professionals who need guidance on diagnostic escalation and differential diagnosis for dermatologic cases.