Definition of "vasomotor" []

• Relating to, causing, or regulating constriction or dilation of blood vessels. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "But when seasonal allergy symptoms crop up for the first time in adulthood, they are more likely due to an irritation of the nasal membranes known as vasomotor or nonallergic rhinitis than to an IgE response, experts say."
• "It's a-- it's a period which can last for a few seconds to a few minutes of what's called vasomotor instability, where the -- there's a dilation of blood vessels in the skin that often causes flushing, a sensation of heat, sweating."
• "Hot flashes, which doctors call vasomotor symptoms, are a major issue in women's health because there are so few effective remedies to relieve them."