What are the side effects of ethyl chloride?

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It is uncommon to experience side effects from ethyl chloride when it is used as a topical anesthetic. It may briefly irritate the eyes or respiratory tract when first sprayed. Spraying too much ethyl chloride may cause frostbite. If you are exposed to ethyl chloride over a long period of time, you may experience intoxication, headaches, uncoordination, trouble breathing, stomach cramps/pain, sleepiness, nausea/vomiting, skin pigment alteration, delayed wound healing, infection and an inability to feel pain while conscious. Rarely, severe allergic reactions occur in the form of swelling, itching, dizziness and a rash. Let your doctor know if you are pregnant and need to take this medication.