Causes of Acid Refluxa. Acid reflux occurs when stomach acid flows back into the esophagus due to a weak lower esophageal sphincter (LES).b. Common factors include certain foods (spicy, fatty), obesity, smoking, and some medications.

Symptoms of Acid Refluxa. Typical symptoms include heartburn, regurgitation, and difficulty swallowing.b. Less common symptoms: cough, sore throat, and chest pain.

Acid Reflux and Neck Inflammationa. While neck inflammation is not a direct symptom, acid reflux can cause throat irritation, which might be perceived as neck discomfort.

When to See a Doctora. Seek medical advice if experiencing severe or frequent symptoms, or if symptoms persist despite lifestyle changes and over-the-counter treatments.