Lately, I've been feeling dizzy. I've always imagined "dizzy spells" to mean: a person feels dizzy while standing, has to sit down, and needs to remain still for a while to let the feeling pass. But what happens with me is, I will be standing still, moving around, or just sitting and eating breakfast - doesn't matter - and suddenly, without warning, I will feel a very brief dizziness, like a "shift" inside my head. It passes quickly. Sometimes that's it, and sometimes it's followed by a few more milder occurrences. Sometimes by many more milder occurrences. "Feeling dizzy" or "dizziness" is listed as a side effect of anastrozole, so I guess that's it.
Also, I'm having trouble sleeping. This is really nothing new; ever since I started cancer treatment, I have to get up multiple times a night because of a hot flash or because I have to pee. But lately, I've had trouble just falling asleep. Even when I'm tired, I will end up tossing and turning for quite a while before dozing off. And I'm definitely feeling more tired during the day than I used to. Both web sites linked above also list "feeling tired" or "unusual tiredness" as a side effect, so maybe it's related.
Anyway, I've added these two items to my list of concerns for when I next talk to my medical oncology NP.
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