Abstract
The purpose of this article is to add information to the many dermatologic topics initially discussed in the 1989 issue on llama medicine (normal anatomy; bacterial, fungal, ectoparasitic, immune-mediated, and zinc-responsive disease) and make mention of newly recognized diseases. Since 1989, it appears that one of the most common and perplexing groups of dermatoses seen at Colorado State University are hyperkeratotic/inflammatory dermatoses. These remain poorly understood. Idiopathic hyperkeratosis (zinc-responsive dermatosis) may be a true zinc deficiency or a keratinizing disorder responsive to supraphysiologic dosages of zinc supplementation. Idiopathic nasal/perioral hyperkeratotic/ inflammatory dermatosis (munge) and idiopathic necrolytic/neutrophilic/hyperkeratotic dermatosis bear clinical, histologic, and therapeutic similarities, and may be subsets of the same disease. Further studies (e.g., looking for metabolic derangements) are necessary to better answer these questions.
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