Waking up with a sore throat and no other symptoms is a common and confusing experience. No fever, no congestion, and no signs of illness, but a painful throat that hurts when swallowing? If this happens occasionally, or even regularly, it could leave you wondering whether something more serious is going on. Fortunately, there are several harmless (and treatable) reasons you might have a sore throat with no other symptoms. For same-day sore throat treatment ...