3.4.1 Hemicrania continua, remitting subtype

A 47-year-old secondary school teacher reports being troubled by a strictly one-sided head pain for close to three months now. She says the discomfort sits consistently on the same side and describes it as a constant ache of moderate strength rather than sharp stabbing pain. During the worst spells the eye on the affected side turns visibly bloodshot, something she has noticed on several occasions when the pain flared. She reports that, when I trialled her on indomethacin at a proper treatment dose, the pain lifted completely within days and has not returned while she stays on it. Even without treatment, she says it is not there every single hour of every day: she gets a clear stretch of well over a day, once even into a second day, when nothing hurts at all before the ache creeps back. She denies any vomiting or sensitivity to light during these spells.