This is usually a condition that is related to back-flow or reflux of the stomach contents into the esophagus and even up into the larynx, which is the voice box.  It is estimated that 10% of Americans have reflux disease.  When the acid from the stomach back-flows into the stomach, it can produce hoarseness, a choking sensation, coughing and difficulty with swallowing. 

This is usually diagnosed by a direct endoscopic visualization of the larynx and throat.  Treatment consists of starting patients on medications to suppress acid production from the stomach.  The first line of treatment is known as H2 blockers such as Zantac, which are readily available over the counter.  The second line of treatment includes Proton pump inhibitors.  Some of these are available over the counter in the form of Prilosec. 

However, it is not recommended that you start treatment unless this condition has been documented and diagnosed by your doctor.