Yes, acid in the esophagus, often due to conditions like gastroesophageal reflux disease (GERD), can lead to coughing and hoarseness or changes in voice. When stomach acid reaches the esophagus, it can irritate the lining, which may trigger a cough reflex as the body attempts to clear the irritation. This cough can sometimes be intense or occur rapidly.
Additionally, the acid can also affect the vocal cords, leading to hoarseness or a quieter voice. People with chronic reflux may experience these symptoms frequently. If you're experiencing these symptoms, it's a good idea to consult a healthcare professional for proper diagnosis and treatment.