This is the clinical picture of munge (idiopathic nasal/perioral hyperkeratotic dermatosis). Some affected animals have lesions on the bridge of the nose and around the eyes and ears.
Average age of onset is six months to two years old.
Tx – address secondary bacterial infections (e.g., daily 10% povidone iodine scrubs and apply 7% tincture of iodine). If minimal response, include a topical glucocorticoid or intralesional triamcinolone acetonide. If still no response, evaluate immune function.
Dorsal nasal alopecia is characterized by alopecia over the bridge of the nose with normal to variably scaly, hyperpigmented, and thickened skin. It is more common in dark-haired animals. It can be secondary to fly bites or rubbing the nose.
Click here to see a llama with dorsal nasal alopecia.
Animals with idiopathic hyperkeratosis (zinc-responsive dermatosis) present with thickened, nonpruritic papules with tightly adherent crusts in the less densely haired areas of the perineum, ventral abdomen, inguinal region, medial thighs, and axilla. Signs can begin at any age.
