

![]() |
Strong emotions or exposure to the cold causes the fingers, toes, ears, or nose to become white, then turn blue. When blood flow returns, the area becomes red and then later returns to normal color. The attacks may last from minutes to hours.
|
|
|
Both primary and secondary Raynaud disease signs and symptoms are thought to be due to arterioles over-reacting to stimuli. Cold normally causes the tiny muscles in the walls of arteries to contract, thus reducing the amount of blood that can flow...
|
|
Pain is a universal human experience. The International Association for the Study of Pain (IASP) defines pain as "an unpleasant sensory and emotional experience associated with actual or potential tissue damage or described in terms of such damage...
|
|
Pain, medically termed "nociception," is a response to noxious stimuli that is conveyed to the brain by sensory neurons . The discomfort signals actual or impending injury to the body. However, pain is more than a sensation, or the physical awaren...
|
|
Pain is an unpleasant feeling that is conveyed to the brain by sensory neurons. The discomfort signals actual or potential injury to the body. However, pain is more than a sensation, or the physical awareness of pain; it also includes perception, ...
|
|
Pain is an unpleasant feeling that is conveyed to the brain by sensory neurons. The discomfort signals actual or potential injury to the body. However, pain is more than a sensation, or the physical awareness of pain; it also includes perception, ...
|
|
Pain is an unpleasant feeling that is conveyed to the brain by nerves in the body.
|
|
Cold intolerance is an abnormal sensitivity to a cold environment or cold temperatures.
|
|
Cyanosis refers to a bluish cast to the skin and mucous membranes caused by a lower level of circulating oxygen carried by the red blood cells. It may also represent a high level of an abnormal form of hemoglobin in the circulation.
|
|
Detecting changes in skin color is challenging because there is such a wide range of skin coloration in all individuals. Subtle changes like skin blanching may occur gradually over time, or there may be a sudden onset.
|
|
|
Cyanosis is a physical sign causing bluish discoloration of the skin and mucous membranes. Cyanosis is caused by a lack of oxygen in the blood. Cyanosis is associated with cold temperatures, heart failure , lung diseases, and smothering. It is see...
|
|
|
Cyanosis is a physical state characterized by bluish discoloration of the skin and mucus membranes. This elderly woman's lips turned purple due to central cyanosis, a condition most commonly due to slow blood circulation, leading to a bluish skin ...
|
|
Pain is an unpleasant sensation triggered in the nervous system that can range from mild discomfort to unbearable agony. Pain receptors located throughout the body send electrical impulses via the spinal cord to the brain.
|
|
Blue lips may represent a type of cyanosis caused by a lower level of circulating oxygen in the red blood cells. It may also represent a high level of an abnormal form of hemoglobin in the circulation.
|
|
Blue fingernails may represent a type of cyanosis caused by a lower level of lack of circulating oxygen in the red blood cells. It may also represent a high level of an abnormal form of hemoglobin in the circulation.
|


