Casal collar
Encyclopedia
The Casal collar or Casal necklace is a clinical sign
in which there is erythematous
pigmented skin rash in the distribution of a broad collar (dermatome
s C3
and C4
). It is seen in patients with pellagra
.
The sign is named after Gaspar Casal
.
Medical sign
A medical sign is an objective indication of some medical fact or characteristic that may be detected by a physician during a physical examination of a patient....
in which there is erythematous
Erythema
Erythema is redness of the skin, caused by hyperemia of the capillaries in the lower layers of the skin. It occurs with any skin injury, infection, or inflammation...
pigmented skin rash in the distribution of a broad collar (dermatome
Dermatome
Dermatome may refer to:*Dermatome , a surgical instrument used to produce thin slices of skin*Dermatome , an area of skin that is supplied by a single pair of dorsal roots*Dermatome...
s C3
Cervical spinal nerve 3
The cervical spinal nerve 3 is a spinal nerve of the cervical segment..It originates from the spinal column from above the cervical vertebra 3 ....
and C4
Cervical spinal nerve 4
The cervical spinal nerve 4 is a spinal nerve of the cervical segment..It originates from the spinal column from above the cervical vertebra 4 .Its control of the thoracic diaphragm has inspired a medical mnemonic: "Cut C4, breathe no more."...
). It is seen in patients with pellagra
Pellagra
Pellagra is a vitamin deficiency disease most commonly caused by a chronic lack of niacin in the diet. It can be caused by decreased intake of niacin or tryptophan, and possibly by excessive intake of leucine. It may also result from alterations in protein metabolism in disorders such as carcinoid...
.
The sign is named after Gaspar Casal
Gaspar Casal
Gaspar Casal was a Spanish physician remembered for describing the Casal collar in pellagra.- Biography :Gaspar Casal practised in Oviedo from 1720 to 1751, at which time he moved to Madrid as King Ferdinand's physician...
.
External links
- Image of Casal collar at phoenity.com Accessed on 22 March 2009.
