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Sarcoptic Mange in Dogs and Cats (Scabies): Symptoms, Treatment, and Prevention
Sarcoptic mange is a highly contagious skin disease caused by the burrowing mite Sarcoptes scabiei, leading to intense itching, redness, hair loss, and crusting. It spreads by direct contact and is treated with parasiticides plus control of secondary infection.
Blastomycosis in Dogs and Cats: Symptoms, Treatment, and Prevention
Blastomycosis, also called North American blastomycosis, is a chronic suppurative granulomatous disease caused by Blastomyces dermatitidis, mainly affecting the lungs, skin, and bone.
Aspergillosis in Dogs and Cats: Symptoms, Treatment, and Prevention
Aspergillosis is a zoonotic disease caused by several Aspergillus species. In dogs and cats it is mainly Aspergillus fumigatus infection of the bronchi and lungs, called canine/feline aspergillosis.
Cryptococcosis in Dogs and Cats: Symptoms, Treatment, and Prevention
The Cryptococcus genus includes 17 species; only Cryptococcus neoformans and its varieties are pathogenic. C. neoformans almost always invades via the lungs; about 90% of lesions stay in the lungs and 10% disseminate through the blood to other organs.
Coccidioidomycosis in Dogs and Cats: Symptoms, Treatment, and Prevention
Coccidioidomycosis, also called coccidioidal granuloma, is caused by Coccidioides immitis. It usually presents as an acute, benign, asymptomatic, or self-limiting primary respiratory infection, occasionally disseminating to form focal lesions in skin, subcutaneous tissue, lymph nodes, bone, liver, kidney, meninges, brain, or other tissues.
Sporotrichosis (Cutaneous Fungal Infection) in Dogs and Cats: Symptoms, Treatment, and Prevention
Sporotrichosis is a chronic infection of the skin, subcutaneous tissue, and adjacent lymphatic system caused by Sporothrix schenckii. It produces hair-loss patches with exudate, scales, and crusts, and is marked by itching and a tendency to become chronic.
Dermatophytosis (Ringworm) in Dogs and Cats: Symptoms, Treatment, and Prevention
Dermatophytosis is infection by keratin-loving dermatophytes (Trichophyton, Microsporum, Epidermophyton) that invade the skin, hair, and nails of people and animals; it is commonly called 'ringworm.'
Actinomycosis in Dogs and Cats: Symptoms, Treatment, and Prevention
Actinomycosis is a chronic suppurative granulomatous disease caused by Actinomyces. Lesions favor the face, neck, chest, and abdomen, spreading to surrounding tissue to form fistulas that drain pus containing sulfur granules. High-dose, long-course penicillin works for most cases; surgery to drain abscesses and remove fistulas is also needed. It is not contagious.
Tuberculosis in Dogs and Cats: Symptoms, Treatment, and Prevention
Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis. The bacterium can invade many organs but mainly the lungs (pulmonary TB). The clinical signs and treatment of TB in dogs and cats are described below.
Necrobacillosis in Dogs and Cats: Symptoms, Treatment, and Prevention
Necrobacillosis is a chronic, sporadic infectious disease of livestock and pets caused by Fusobacterium necrophorum, marked by necrosis of the hooves, subcutaneous tissue, or digestive-tract mucosa. It can spread to internal organs (liver, lungs) forming necrotic foci, and sometimes causes oral or mammary necrosis.