What is the characteristic feature of a common migraine?

A characteristic feature of a common migraine, also known as a migraine without aura, is the absence of an aura. This type of migraine typically manifests as a moderate to severe headache, most often unilateral and pulsating in quality, without the preceding sensory disturbances that characterize a migraine with aura.

Common migraines usually include symptoms like nausea, vomiting, and exacerbation of symptoms with physical activity. While intense photophobia may accompany a common migraine, it is not exclusive or defining for this type. Additionally, the specific duration of the headache does not exceed 72 hours as mentioned in the fourth possibility. Thus, identifying the absence of aura as a defining characteristic is vital in differentiating between common and classic migraine types.