Can urination or changes in temperature trigger partial (focal) seizures?

I've been having these seizures, or whatever they are, for years. It's never been a problem, so I kept putting off looking into it. I have some time now, so I thought I'd ask.

These aren't head rushes. There's no sudden drop in blood pressure. If anything, there's an increase of blood flow to my head during these events. I found a better description of these events at the following link.

http://www.nlm.nih.gov/medlineplus/ency/artic...

Urinating usually triggers it. Within a few seconds of the urine stream stopping, a tingling sensation of varying intensity will rush to my head. The milder events are just sensations. But they are often more intense, causing the abnormal muscle contraction described in the above link, including forced turning of the head, affecting one side of the body (one eye twitching) and my neck muscles tense up. Thankfully, I don't notice any other symptoms other than muscle contractions and tingling sensations, and the events last only 2-5 seconds.

Another trigger can be changes in temperature. Feeling a draft from an open door or window can trigger an event, although the temperature triggers are never as intense as the urination triggers.

Like I said, these are never a problem. They just feel really weird and I'd like to know if they're a sign of a more serious condition.