How can pain behind the ear cause headache?

Pain behind the ear may be caused by a variety of factors. Inflammatory lesions and neurological lesions are common triggers of pain behind the ear.
If a patient presents with both postauricular pain symptoms and headache symptoms, it is important to first confirm whether there is an inevitable link between the two conditions and whether there is a mutual trigger. If it is confirmed that the headache symptoms are caused by pain behind the ear, consider a close association with neuropathic lesions.