No, "red hot ears" is not usually a problem with your blood pressure, but it is "vascular". In most cases, this unusual phenomenon is just a variation of blushing -- warm, red blood is shunted to your outer ears, giving them that red appearance. Unlike other blushing, this is not necessarily caused by embarrassment or other triggers; it just happens. For some people, the ears can uncomfortably hot or even painful. To the very least, it can be embarrassing.
There is very little that you can do for this, but since you mentioned blood pressure, the use of a class of drugs called beta-blockers has been used for red, hot ears. These are use for high-blood pressure, preventing migraines, and other cardiac problems. Sometimes it helps; sometimes it doesn't. It would be up to you to convince your doctor to prescribe them for this purpose.
Red, hot ears are harmless, but if you consider the problem severe, beta-blockers may be worth a try.
There are many discussions about red, hot ears on WebMD's Ear, Nose, and Throat Community Board.
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