Several types of headaches, like migraine and cluster headaches, cause unilateral (one-sided) pain. A right-sided headache is ...

Migraine is characterized by recurrent attacks of headache and combinations of neurologic, gastrointestinal, and autonomic changes. Unilateral cranial autonomic symptoms (UAs) are features of ...

nor was there a difference between headache and non-headache sides of the brain in the 18 patients who experienced unilateral headache. These findings suggest that intracranial vasodilatation does ...