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Pronunciation. pɪˈtiːkɪə. Specialty. Rheumatology. A petechia ( / pɪˈtiːkiə /; [ 1] pl.: petechiae) is a small red or purple spot (≤4 mm in diameter) that can appear on the skin, conjunctiva, retina, and mucous membranes which is caused by haemorrhage of capillaries. [ 2][ 3] The word is derived from Italian petecchia ' freckle ', of ...
August 20, 2024 at 7:18 PM. Doctors can stop severe bleeding ‘in seconds’ with newly approved trauma product. The U.S. Food and Drug Administration (FDA) has approved a novel treatment that is ...
Red-eye effect seen on a teenager. The red-eye effect in photography is the common appearance of red pupils in color photographs of the eyes of humans and several other animals. It occurs when using a photographic flash that is very close to the camera lens (as with most compact cameras) in ambient low light.
Common. Subconjunctival bleeding, also known as subconjunctival hemorrhage or subconjunctival haemorrhage, is bleeding from a small blood vessel over the whites of the eye. It results in a red spot in the white of the eye. [ 1] There is generally little to no pain and vision is not affected. [ 2][ 3] Generally only one eye is affected.
A tourniquet is an emergency device used to stop life-threatening bleeding that cannot otherwise be stopped. You should avoid using a tourniquet if: You can stop the bleeding using another method ...
Ophthalmology. A red eye is an eye that appears red due to illness or injury. It is usually injection and prominence of the superficial blood vessels of the conjunctiva, which may be caused by disorders of these or adjacent structures. Conjunctivitis and subconjunctival hemorrhage are two of the less serious but more common causes.
Those red eyes you get from swimming aren't caused by chlorine, according to an official with the Centers for Disease Control and Prevention. %shareLinks-quote="Chlorine binds with all the things ...
Haemolacria can manifest as tears ranging from merely red-tinged to appearing to be entirely made of blood, [ 1] and may also be indicative of a tumor in the lacrimal apparatus. It is most often provoked by local factors such as bacterial conjunctivitis, environmental damage or injuries. [ 2] On rare occasions, a nosebleed may result in bloody ...