I ve had this headache for about a week now, and I have no idea where it came from. I have spring seasonal allergies that kicked in only about 2-3 weeks ago that are accompanied by sneezing, coughing, usually red and itchy eyes, and a runny nose. I recovered from them, and I also was just recovering from a cold last week. However, after a few days of having this cough, I started feeling this pressure in the left side of my head. The cough subsided but the pressure didn t. The pressure however, hasn t really amounted to much. It hasn t gotten better, and it hasn t really gotten worse. Most of the time, I feel it may be some sort of placebo, because most times I feel when I think about it, it hurts, and when I don t think about the headache, it doesn t bother me. would classify the headache this way; sometimes when I cough or sneeze, there s a slight, sharp pain in the left side of my head. This may also be accompanied by very dull to moderately painful pains. These dull pains are somewhat frequent throughout the day, and like I said before, has been going on for the past week. I have not experienced any other side effects. There has been NONE of these things: nausea, vomiting, blurriness in vision, hearing loss, difficulty speaking, loss of motor skills, change in attitude, muscle aches around neck, numbness in muscles, seizures or epilepsy, nor have I experienced any lethargy during the day. I was speculating the possibility of a brain tumor, however, the fact that I have not experienced any of the other symptoms at all is noteworthy to me. The closest idea that I can think of is that it may be a cluster headache. Do you have any ideas what this may be?