Decompression diseases, also known as the bends or decompression sickness, are a group of potentially serious medical conditions caused by a rapid decrease in pressure. Symptoms of these diseases range from joint pains, dizziness, and fatigue, to paralysis and even death. While "decompression diseases" is the commonly used term for these conditions, there are several other synonyms that are used interchangeably. These include caisson disease, diver's palsy, and compressed air illness. Regardless of the terminology, these conditions are a serious concern for those who work in underwater construction, deep-sea diving, or aviation industries. Immediate medical attention is necessary to prevent further complications and ensure a speedy recovery.