Rigor (medicine) - Citizendia

Symptom/Sign: **Rigor**
*Classifications and external resources*
ICD-10	R50. A symptom' (from Greek σύμπτωμα, "accident misfortune that which befalls" from συμπίπτω, "I befall" from A Sign is an indication of some fact or quality and a medical sign is an objective indication of some medical fact or quality that is detected by a Physician The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify Diseases The International Statistical Classification of Diseases and Related Health Problems 10th Revision ( ICD -10) is a coding of diseases and signs symptoms abnormal findings 0
ICD-9	780.6

"Chills" redirects here. The International Statistical Classification of Diseases and Related Health Problems (most commonly known by the abbreviation ICD) provides codes to classify Diseases The following is a list of codes for International Statistical Classification of Diseases and Related Health Problems. For the New Zealand rock band, see The Chills. The Chills are a guitar and keyboard-based rock band from Dunedin, New Zealand.

Rigor is a shaking occurring during a high fever. Tremor is an unintentional somewhat rhythmic muscle movement involving to-and-from movements (oscillations of one or more parts of the body Fever (also known as pyrexia, from the Greek pyretos meaning fire or a febrile response, from the Latin word Febris It occurs because cytokines and prostaglandins are released as part of an immune response and increase the set point for body temperature in the hypothalamus. Cytokines are a category of signalling Proteins and Glycoproteins that like Hormones and Neurotransmitters, are used extensively in cellular A prostaglandin is any member of a group of Lipid compounds that are derived enzymatically from Fatty acids and have important functions in the Animal body An immune system is a collection of mechanisms within an Organism that protects against Disease by identifying and killing Pathogens and Tumor The hypothalamus links the Nervous system to the Endocrine system via the Pituitary gland (hypophysis

The increased set point causes the body temperature to rise (pyrexia), but also makes the patient feel cold until the new set point is reached. Fever (also known as pyrexia, from the Greek pyretos meaning fire or a febrile response, from the Latin word Febris Rigor occurs because the patient is effectively shivering in a physiological attempt to increase body temperature to the new set point.

See also