What condition is it when you suddenly have a hoarse voice for days, very mild dry cough, 38 deg c fever at night only? no cold, no sore throat, no headache, no fatigue, appetite is good. thanks?

See a ENT doctor: A situation like this needs a ENT doctor to check your throat. Laryngitis for days has a reason. Can be further looked into with a office visit. Don't wait make an appointment today.

Viral: The symptoms may be related to a viral illness. Otherwise also consider an allergic reaction, choking episode. Monitor your temp and take an antihistamine to gauge response. Keep well hydrated and rest.

Watch diet: I believe that gastric reflux and sinus allergy could produce your symptoms. I suggest that you avoid liquids at least 4 hours prior to retiring at bedtime and spend those hours sitting up. An allergy could produce your sinus drainage. Your physician could help with your symptoms.