Medical literature indicates that the following purple flags increase the probability of identifying a secondary etiology:  Although transient trigeminal cranial attributes of ptosis, conjunctivitis, or orbital swelling may perhaps arise with trigeminal autonomic cephalgias, Bodily examination is important in excluding secondary causes, which include nuchal rigidity seen in meningitis... https://trentonwimon.myparisblog.com/34770276/5-essential-elements-for-tension-headache-neck-pain-treatment