PPID did not seem to exist in the past. Older horses, those aged 15 and over, would develop age-related issues that would worsen with time. Occasionally, a fortunate senior horse might have the kind of vet willing to consider what was previously known as Cushing's disease. Thankfully, the past two decades have brought about a positive shift. Scientific knowledge is more widely available, revealing that what was once merely considered to be a range of age-related issues can now often be diagnosed as characteristics of PPID; the current term for what is now recognised as a stand alone challenging condition. PPID-affected horses remain under the radar less frequently, because we ourselves as horse owners are more likely to raise the alarm if we think our horse has PPID. This book is designed to respond to the need to better understand what PPID is and what you can do as a horse owner to help your horse. The content is presented in clear and straightforward language, covering the disease itself, its diagnosis by the veterinarian, and detailed treatment approaches for PPID-affected horses, pony's and donkeys, helping you and your equine friend to continue to live with PPID by dispelling some of the mystery around this condition.