One of the four prominent symptoms of typhoid is coated tongue. Even before the onset of fever, the tongue appears furred, with centrally coated and a red margin around. There are other illness also which shows coated tongue, but with different appearance. In malaria, the tongue is uniformly coated whereas in candidia thrush, a thick white layer of which patch is formed. In typhoid, the patch is centrally located on the tongue surrounded by a red margin. During the first week of typhoid, the dorsum of tongue is covered with a thin dirty white fur, which occurs due to the toxins released by the pathogen. The coat gradually clears from the tip and edges and completely disappears by the thid week of infection, leaving a glazed, dry or smooth red tongue. By observing the coat pattern, the Doctor would have diagnosed the fever well in advance. Solution One of the four prominent symptoms of typhoid is coated tongue. Even before the onset of fever, the tongue appears furred, with centrally coated and a red margin around. There are other illness also which shows coated tongue, but with different appearance. In malaria, the tongue is uniformly coated whereas in candidia thrush, a thick white layer of which patch is formed. In typhoid, the patch is centrally located on the tongue surrounded by a red margin. During the first week of typhoid, the dorsum of tongue is covered with a thin dirty white fur, which occurs due to the toxins released by the pathogen. The coat gradually clears from the tip and edges and completely disappears by the thid week of infection, leaving a glazed, dry or smooth red tongue. By observing the coat pattern, the Doctor would have diagnosed the fever well in advance..