The clinician examines a male patient who presents with a severe headache that is on the right side of his head. The patient states that the pain usually lasts about 1 hour and that he experiences right-sided nasal discharge, right eye redness and right eye discharge. This headache occurs several times a day. These symptoms are consistent with which of the following?
A. Unilateral headache
B. Tension-type headache (TTH)
C. Migraine without aura
D. Increased intracranial pressure (ICP)