Pain swallowing is another symptom to pay attention to. It is rather rare, but it makes many people shake in their boots. A lot of dangerous diseases may lead to a sore throat; in contrast, sometimes a sore throat may be a sign of the common flu. Allergies and intensive singing/screaming may cause pain swallowing as well. Before calling a sore throat a symptom of the acid reflux, the patient should make sure he is not confusing the problem with something really serious. Check whether you have body ache or a runny nose – those are the specific features of cold or flu. If there are no signs like that, you may suspect having an acid reflux.