A chill is a sensation of cold characterized by involuntary and uncoordinated contractions of small muscle groups. Chills can occur with or without fever. The former most often occur when we are sick or have a cold, then they are a consequence of the stimulation of the thermoregulatory center in the midbrain.
Chills without fever can be more serious, as they may signal underlying health issues. When chills occur alongside a fever, they are typically a pathological response. This response can be triggered by the presence of “fever-inducing” substances in the bloodstream. This type of chill is the most prevalent.
Additionally, chills can be observed during the disintegration of a tumor.
