Caustic Soda Solutions: Potential symptoms: Eye, skin mucous membrane irritation; sore throat, cough, labored breathing, shortness of breath; pulmonary edema, pneumonitis; eye, skin burns; redness, pain, blisters; blurred vision, blindness (from contact with liquid); temporary loss of hair; INGES ACUTE: Burning sensation; nausea, vomiting; abdominal pain, diarrhea; swelling of the larynx to the point of suffocation; shock or collapse.