Favus is another skin disease caused by a fungus. Under the microscope, the fungus causing favus is quite distinct from that causing ringworm; its name is Anchorion Schon-leinii. And like the ringworm fungus, the one causing favus is transmissible to man, birds and other animals.
The favus fungus grows into the hair follicles, over the outer part of the hair and penetrates between the layers of the epidermis. In other words, the fungus causing favus goes deeper into the skin. Favus is characterized by cups or indentations found on the face, ears, head and paws. The cups have raised margins that are silver-gray in color. In the center of these cups or indentations may be found stumps of broken hair. A positive diagnosis can only be made by a skin scraping examined under a microscope.
Treatment: Favus responds to treatment with tincture of iodine or iodine ointment. There are also various commercial ringworm and favus preparations that are effective. Treatment should start at the first sign of the condition. Favus is contagious, so wear rubber gloves and follow the same procedure as for treating ringworm. Clip the hair around the affected parts, wash with mild soap and warm water to remove the scabs and crusts, then apply iodine ointment, tincture of iodine or a commercial preparation. If the condition persists, consult your veterinarian.
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