W94: Exposure to high and low air pressure and changes in air pressure

The conditions under the heading "Exposure to high and low air pressure and changes in air pressure" pertain to the effects on the human body when it is exposed to changes in the atmospheric pressure above or below the usual level found at sea level. The causes may vary from professional environments like diving or aviation to recreational activities such as mountain climbing or amateur diving. When the pressure significantly changes, it may cause various reactions such as ear pain, sinus congestion, dizziness, shortness of breath, and in severe cases, decompression sickness, a condition which can damage the nervous system if not treated promptly. Both sudden and gradual pressure changes can affect various body systems, often manifesting primarily in the respiratory and nervous systems. The progression depends largely on the severity of the pressure change, the speed at which it occurred, and the individual's health condition.