Which of the following symptoms is associated with Wallenburg syndrome?

Wallenburg syndrome, also known as lateral medullary syndrome, is primarily characterized by the loss of pain and temperature sensation on one side of the body. This occurs due to a lesion in the lateral medulla oblongata, often resulting from an infarction typically related to vertebral artery occlusion. The affected pathways include the spinothalamic tract, which conveys pain and temperature sensations, and damage to this area leads to contralateral loss of these sensations.

Furthermore, Wallenburg syndrome can present additional symptoms, such as dysphagia, dysarthria, and ataxia due to involvement of other neural structures, but the hallmark feature remains the loss of pain and temperature sensation. This symptom aligns with the process by which the neural pathways are affected following the localized vascular impairment in the medulla.