What Causes Sudden Hot Flashes On The Torso?
Welcome and thanks for your query.
I presume that she had no symptoms like fever or musculoskeletal pains.
Was the heat flash from the back to front along a nerve distribution? If so it can be from a nerve being stimulated. This can be from electrolyte abnormalities like a decreased ionized calcium level as can occur with increased breathing or anxiety.
Claminess of the skin is due to decreased skin perfusion and can be due to a fall in blood pressure or anxiety.
If symptoms persist it would be good to have her examined by a doctor and investigated if necessary.
Do get back to me if you have further queries.