A severe headache behind the left eye may result from serious conditions ... You can usually relieve these headaches with over-the-counter medications and lifestyle changes like more rest.

Table 1. Causes of Headache and Third-Order Horner's Syndrome Dr. Jurkunas is affiliated with the department of cornea and external disease, Massachusetts Eye and Ear Infirmary, Boston ...

Sudden onset of facial pain radiating to the ipsilateral eye along with Horner's syndrome should alert one to carotid artery dissection. Neurotrophic spread of skin cancer may present with facial ...