Why is it important to avoid diving with head congestion?

Diving with head congestion poses significant risks, primarily due to the potential for ear injuries. When a diver experiences congestion, the Eustachian tubes, which help equalize pressure in the middle ear, can become blocked. This blockage prevents the equalization of pressure during descent and ascent, which may lead to painful barotrauma, a condition where pressure causes injury to the ear structures. The congestion can also inhibit proper ventilation of the ear, increasing the likelihood of suffering from conditions such as middle ear barotrauma or even ruptured eardrums. Maintaining the ability to equalize ear pressure is critical for safe diving, thus emphasizing the necessity of avoiding diving when experiencing head congestion.

While other factors such as managing buoyancy and oxygen levels are important for a safe diving experience, the immediate concern with head congestion is the risk of injury to the ears due to pressure changes. This makes awareness and precaution regarding ear health particularly vital for divers.