Would you use a triptan in a patient with a vascular malformation, such as an arteriovenous malformation, cavernous malformation, or developmental venous anomaly?  

I see no reason not to use a triptan under the circumstances mentioned. I consider the gepants indicated when there are contraindications to the triptans, which are: poorly or uncontrolled hypertension and (atherosclerotic) vascular disease affecting the heart, brain, bowel, or legs. The above-menti...

I am not aware of any evidence to support withholding the use of triptans as abortive treatment in cases with these vascular malformations. I have routinely used triptans as abortive treatment in these patient populations.