And, while physical activity typically aggravates migraine pain, it doesn't make tension headache pain worse.

CNN: Tension headache

David Herbert didn't think much about the slight headache he'd been having for a week and a half.

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It's an odd predicament, to say the least, but if you're familiar with the kind of off-field trouble that professional athletes can get into, an imaginary girlfriend doesn't sound like much of a headache for human resources.

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Tension headaches can sometimes be difficult to distinguish from migraines, but unlike some forms of migraine, tension headache usually isn't associated with visual disturbances (blind spots or flashing lights), nausea, vomiting, abdominal pain, weakness or numbness on one side of the body, or slurred speech.

CNN: Tension headache

The toughest part: All this creative engineering, however exciting it may be for consumers, can't overcome Sony's number one headache: high costs.

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An increased sensitivity to light or sound can occur with a tension headache, but these aren't common symptoms.

CNN: Tension headache

Nobody--many people wouldn't even bother going to the police because it was extra headache.

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Finding satellites can be a major pain sometimes, and the signal can drop while you're driving (see video), which could be a major headache if you're on a trip and you really don't know where you're going.

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