Hello. I am writing on behave of my boyfriend. He just turned 26.

He called me today to tell me about a headache he was having that started around 3pm. He told me that it was the worst one he has ever had by x50. He describes it as a huge pressure/explosion behind his left eye and it has spread his left temple as well. His eyelid is a little droopy and his nose is runny but he is getting over a cold and it is allergy season. He said his pupil is dilated as well. He said lights and bright noises make it worse. However, he can move his head without pain. He is still having the headache and it is now 4:40.

Does this sound like a cluster? This is his first time with this pain so there is no way to know if it happens at the same time everyday or if it is always on the same side and so on.