In the head and neck, pseudoaneurysms are much more likely to be the result of trauma, although the majority of pseudoaneurysms are iatrogenic 1)

see Extracranial traumatic pseudoaneurysm.

see Intracranial traumatic pseudoaneurysm

1)
Isaacson G, Kochan PS, Kochan JP. Pseudoaneurysms of the superficial temporal artery: treatment options. Laryngoscope. 2004 Jun;114(6):1000-4. doi: 10.1097/00005537-200406000-00008. PMID: 15179202.