Which meridian is affected when a patient presents with a frontal headache?

The correct choice is the Yangming meridian. This meridian is associated with the large intestine and stomach, and it is specifically linked to frontal headaches, which often manifest in the forehead area. In traditional Chinese medicine, Yangming is understood to be involved when there is an accumulation of pathogenic factors that lead to symptoms such as pressure and pain in the frontal region of the head.

Frontal headaches can often be linked to issues like excess heat or dampness, which are conditions that the Yangming meridian may help to address due to its role in digestion and elimination. The functionality of the Yangming meridian can influence the head area significantly, making it an important point of consideration when diagnosing and treating frontal headaches.

Understanding these connections can aid practitioners in determining the appropriate treatment strategies to relieve symptoms associated with this type of headache.