The intra and extra cranial veins in relationship with chronic migraine

Migraine with and without aura is a widespread disease characterized by recurrent pain involving only one side of the head matched by nausea, vomiting, photophobia and/or hyperacusia.¹ It is defined as chronic if present for at least 15 days/month for more than 3 months.

Source: https://www.pagepressjournals.org/index.php/vl/article/view/8435/8419