Which of the following is a symptom of DCS Type 1?

The symptom associated with DCS Type 1, also known as decompression sickness or "the bends," is marbling of the skin. This condition is typically characterized by the formation of nitrogen bubbles in the tissues as a result of rapid decompression during or after a dive. The marbling appearance occurs mainly in the skin and subcutaneous tissues, leading to a mottled or spotted appearance.

Symptoms of DCS Type 1 can vary, but they primarily affect the joints, muscles, and skin. While the other options listed may appear in different medical contexts, they are not specific to DCS Type 1. Severe headaches are more commonly associated with other conditions, seizures can indicate neurological complications or other issues, and chest pain may be related to various cardiovascular or respiratory conditions rather than DCS Type 1. Understanding these specific symptoms helps in the timely recognition and treatment of decompression sickness in divers.