Some breeds are more predisposed to skin problems, however some problems are as a result of allergies, diet or sometimes the reason is difficult to discover and you are left with trying to deal with the problem. Your vet can help manage the symptoms if your pet is irritated with their skin, and often your pet can't tell you they are in pain or itchy, however their behaviour may change, for example becoming more irritable, or just looking unhappy and not themselves.
There are some things that you can do to help avoid skin problems - keep the coat groomed (see below for correct brushing), keep their coat clean, brushing, bathing, wash mud off after a walk and keep the coat matt free - matts can pull on the skin, eventually they hurt and can really irritate your pet. & the skin can become sore. You can buy medicated shampoo that will help with irritable skin, or your groomer can bath your pet should you not have the facilities.
Your pet will also benefit from regular flea treatments - many dogs and cats are allergic to their bites so it is vital to do what you can to keep their coat free from mites and fleas.
You can try alternative and complimentary treatments, to see if they are effective, some good results have been reported with aloe vera gel (please make sure this is pure), and also coconut oil is nourishing to the skin, again in its natural state.
The most effective treatment I have found for ongoing skin conditions are mud baths with dead sea mud - this is specifically for pets. I have tested this on a number of clients always with overwhelmingly positive results. This bath will thoroughly nourish and clean the skin leaving the skin and coat in super condition. Please see information on treatments for more details about this treatment.