There are 2 two common causes of deep breathing that trigger pain on one side of the back, the most common being rib fractures. All rib fractures have clearly suffered an impact or trauma, a fall, etc. However, in some patients with rib fractures, there is no clear course of injury and the rib fracture is caused by an inadvertent action, such as sneezing, sudden movement, or movement of the chest and back. Patients with rib fractures will experience more pronounced pain when they take a deep breath, sneeze, or cough. When they move their back, they may experience a bone rubbing sensation and will feel abnormal movement or popping of the ribs, and the pain symptoms will get worse and worse for more than three weeks before they are relieved. Chronic fasciitis in the back can also be symptomatic. Inflammation of the fascia can cause localized soft tissues to adhere to each other, and once you take a deep breath, you will experience pulling pain.