Picture 1 â Sun Poisoning Rash. Source â prime health channel. When excessive exposure of the skin to the harmful UV rays of the sun causes an allergic reaction in the form of development of itchy skin rash and the reddening of the skin, one may be said to suffer from Sun Poisoning Rash.
Note that excess niacin intake can cause symptoms similar to an allergic reaction, including skin flushing, stomach redness and warmth, particularly of the face. Your physician may recommend allergy testing to determine if you have an allergy or symptoms of excess intake.
High doses (50 mg or more) of niacin can cause side effects. The most common side effect is called niacin flush, which is a burning, tingling sensation in the face and chest, and red or flushed skin.Taking an aspirin 30 minutes prior to the niacin may help reduce this symptom.he most common side effect is called niacin flush, which is a burning, tingling sensation in the face and chest, and red or flushed skin. Taking an aspirin 30 minutes prior to the niacin may help reduce this symptom.