German Shepherds are large dogs with dense coats and high activity levels, which makes them more likely to develop skin problems. Skin disease in dogs is often troublesome to treat. Treatment can take a long time, and relapse is common. Because of that, the best strategy for German Shepherd skin disease is prevention first.
Symptoms of German Shepherd skin disease
In general, typical signs appear as round bald patches with broken hair on the head, neck, or legs, often covered with gray scales. In severe cases, several spots may merge together. Sometimes there are no obvious visible lesions at first, but the dog repeatedly scratches with its paws or licks a certain area, and hair loss becomes unusually heavy. These can also be signs of skin disease.

How to prevent skin disease
The best response is to do preventive care well. Brush the German Shepherd often, ideally once a day. To lower the chance of disease or to prevent recurrence after healing, the coat should stay airy and fluffy. Brushing should follow a proper order and method so no area is missed.
Bathing should not be too frequent. In general it is best not to exceed once a week. Bathing too often is not helpful because the skin produces natural oils that help resist germs. Frequent washing destroys that balance and creates opportunities for bacteria or viruses.
If you find the coat tangled, untangle it promptly. Very few German Shepherds remain completely mat free all the time. Even with careful care, local tangles can happen. If you cannot comb a tangle out, it is better to trim it away. Leaving mats in place makes skin problems more likely.

Treatment of German Shepherd skin disease
The treatment itself is straightforward in principle. First, follow the veterinarians instructions, whether that means using medication, trimming the coat, or both. Second, stay persistent. Skin treatment in German Shepherds often takes a long time, and because they are large dogs, applying medication can be inconvenient. Many people stop halfway, and that often leads to recurrence.

Treating skin disease is not necessarily technically difficult. What it mainly requires is time, effort, and patience. With consistent care, it can usually be controlled well. Even better, good daily prevention reduces the chance of illness in the first place and saves both the dog and the owner a lot of trouble.