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Argyria or argyrosis is a condition caused by excessive exposure to chemical compounds of the element silver, or to silver dust. [1] The most dramatic symptom of argyria is that the skin turns blue or blue-gray. It may take the form of generalized argyria or local argyria. Generalized argyria affects large areas over much of the visible surface ...
Cyanosis is the change of body tissue color to a bluish-purple hue, as a result of decrease in the amount of oxygen bound to the hemoglobin in the red blood cells of the capillary bed. [1] Cyanosis is apparent usually in the body tissues covered with thin skin, including the mucous membranes, lips, nail beds, and ear lobes. [1]
The very term "acrocyanosis" is often applied inappropriately in cases when blue discoloration of the hands, feet, or parts of the face is noted. [1] The principal (primary) form of acrocyanosis is that of a benign cosmetic condition, [2] sometimes caused by a relatively benign neurohormonal disorder. [3] Regardless of its cause, the benign ...
Blushing or erubescence is the reddening of a person's face due to psychological reasons. [1] [2] [3] It is normally involuntary and triggered by emotional stress associated with passion, embarrassment, shyness, fear, anger, or romantic stimulation . Severe blushing is common in people who have social anxiety in which the person experiences ...
Bluetongue disease is a noncontagious, insect-borne, viral disease of ruminants, mainly sheep and less frequently cattle, [1] yaks, [2] goats, buffalo, deer, dromedaries, and antelope. It is caused by Bluetongue virus ( BTV ). The virus is transmitted by the midges Culicoides imicola, Culicoides variipennis, and other culicoids .
Rhinophyma is characterised by prominent pores and a fibrous thickening of the nose, sometimes with papules. It is associated with the common skin condition rosacea and it can be classified clinically into 5 grades of increasing severity. Complications. Tissue thickening may come to cause airway obstruction and impede breathing.
Cause. Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin. The blue colour is caused by melanocytes, melanin -containing cells, that are usually located in the surface of the skin (the epidermis ), but are in the deeper region (the dermis) in the location of the spot. [6]
The danger triangle of the face consists of the area from the corners of the mouth to the bridge of the nose, including the nose and maxilla.: 345–346 Due to the special nature of the blood supply to the human nose and surrounding area, it is possible for retrograde infection from the nasal area to spread to the brain, causing cavernous sinus thrombosis, meningitis, or brain abscess.