From the description it seems you develop flushing over your neck. The same could occur due to hormonal
changes during menopause
, due to stress, anxiety, intake of hot spicy food, caffeine, alcohol intake, sun exposure, during exercise or with medicines. Sometimes it can be associated with serious systemic causes like carcinoid
syndrome etc. when it develops application of ice, calamine lotion along with intake of cetirizine
should help. I would advise you to visit a doctor near by to ascertain the underlying cause.
Hope that helps. Take care