<unk>  is a feeling of general discomfort or uneasiness, an "out of sorts" feeling, often the first indication of an infection or other disease. Often defined in medicinal research as a "general feeling of being unwell".
Colloquially,<unk>  has been referred to as "the  creeping crud" (especially in reference to the<unk>  caused by communicable diseases such as influenza and the common cold). This usage may have originated in folk medicine, but it is adopted from the French word meaning "discomfort," "feeling faint," "feeling sick."
The term is also often used figuratively in such contexts as "economic<unk> ."
Malaise
Scabies
Rattlesnake
Larva currens
Mumps
Herpangina
Larva migrans
Chordee