If there is symmetrical pain, then there may be some relationship with the nerve course, and symmetrical pain. First of all, we should consider chest lesions, of which lung lesions are the most common, because local lesions cause the pleura to be stretched, and inflammatory exudation may cause local irritation, which may cause pain on both sides. In general, this type of symptom should be examined first on imaging, but also if the lesion is widespread. If the lesion is symmetric, it is not neuralgia, and the neuralgia is relatively limited.