The answer to 'fence disease' is that there are several common causes of fence damage, including rot, insect infestation, and weather exposure. Symptoms can include warping, cracking, and discoloration of the wood. Solutions may involve replacing damaged sections, treating the wood, or installing a new fence altogether.
In many cases, minor fence repairs can be done as a DIY project. However, for more extensive damage or complex issues, it's best to call in a professional landscaping or fencing contractor. They can properly diagnose the problem and recommend the most effective and long-lasting solution.