A number of conditions could cause hair loss in a Rottweiler so it is better to consult a veterinarian than to attempt solving the problem on your own. Most veterinarians would be willing to diagnose something as simple as bathing too frequently over the phone, so do not hesitate to call. It is always best to ask a professional's opinion especially since Rottweilers are not generally known to suffer any kind of skin-related genetic defects.
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Fleas
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Fleas may not only cause your Rottweiler to scratch constantly but some dogs may also suffer from a condition known as flea allergy dermatitis. Medi-vet.com explains that an allergic reaction to flea saliva can cause even more sever reactions to flea bites. If you do see fleas you should wash your dog with a veterinarian approved shampoo. It will also help reduce flea populations in your home if you vacuum daily and frequently wash your Rottweiler's bedding.
Mange
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While there are several varieties of mange, only one is likely to cause significant hair loss. A microscopic mite causes scarcoptic when it burrows under a dog's skin to lay eggs. If your dog has scarcoptic mange it will typically begin losing hair around the ears, face, elbows and legs. This mange is contagious to humans. There is no home remedy for mange. Veterinarians treat the condition with special medications and steroids. Prompt diagnosis and treatment will make curing the problem easier.
Food Allergies
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Food allergies typically cause skin irritation which may provoke your Rottweiler to scratch enough to lose his or her hair. Food allergies may begin unexpectedly and are not necessarily because of a significant change in your dog's diet. Medi-vet lists beef, milk products, cereals, chicken and eggs as common dog allergens. Allergic reactions occur when your dog's immune system confuses these foods for dangers and attempts to fight them off. Apart from itchy skin, food allergies may also cause diarrhea or other digestive problems. Although food allergies are difficult to diagnose they are typically treated with a change an diet, often to a lamb and rice formula dog food.
Atopy
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Canine atopy is an allergic reaction that your Rottweiler could have to something in its environment. These allergens are usually something airborne like pollen, mold or even dander from other animals. These allergies are extremely difficult to identify and usually require a process-of-elimination effort.
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