These conditions are due to a spasm of blood vessels preventing blood from getting to a particular area of the body, typically the end of an extremity, though not necessarily. They often occur in response to a drop in temperature. Raynaud’s phenomenon will occur in the fingers, for example, when someone goes outside from a warm house on a cool day. The fingers will turn white and the lack of blood getting to the tips of the fingers will cause pain. Raynaud’s phenomenon occurs more commonly in women than men, and can be often associated with “auto-immune” illnesses such as rheumatoid arthritis.
Here, we will refer to both conditions as vasospasm. Vasospasm can also occur in nipples. In fact, it is much more common than generally believed. It can occur along with any cause of sore nipples, and is, in fact, probably a result of damage, but it may also, on occasion, occur without any other kind of nipple pain at all.
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