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1 The skin condition known as rosacea can also cause hot face and ears. Other symptoms include broken veins and redness.  The condition can also be a sign of carcinoid syndrome. Hormone releasing tumors in the appendix, bronchial tubes, colon or small intestine cause this syndrome.
Extreme emotions can trigger redness in the face. For example, if you become deeply embarrassed or anxious, your face or neck may appear splotchy. Experiencing feelings of extreme anger, stress, or sadness may also cause skin flushing. Crying can often cause red blotches on the face and neck. All of these emotions are a sign of an acute increase in blood pressure.