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The most common cause of petechiae is through physical trauma such as a hard bout of coughing, holding breath, vomiting, or crying, which can result in facial petechiae, especially around the eyes. Excessive scratching and friction, especially on thin and poorly circulated parts of the body may also cause petechiae.
The sudden impact on the thorax causes an increase in intrathoracic pressure. [4] In order for traumatic asphyxia to occur, a Valsalva maneuver is required when the traumatic force is applied. [6] Exhalation against the closed glottis along with the traumatic event causes air that cannot escape from the thoracic cavity.
appearance of petechiae after compression of arm by bandage or blood pressure cuff Hildreth's sign: DH Hildreth: dermatology: glomus tumor: Relief of pain at tumor site upon vascular occlusion of limb, with acute return of pain on reperfusion Hippocratic face: Hippocrates: palliative care: impending death: Hippocratic fingers: Hippocrates ...
They measure 3–10 mm, [3] whereas petechiae measure less than 3 mm, and ecchymoses greater than 1 cm. [4] Purpura is common with typhus and can be present with meningitis caused by meningococci or septicaemia. In particular, meningococcus (Neisseria meningitidis), a Gram-negative diplococcus organism, releases endotoxin when it lyses.
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Causes can include coughing, vomiting, heavy lifting, straining during acute constipation or the act of "bearing down" during childbirth, as these activities can increase the blood pressure in the vascular systems supplying the conjunctiva. Other causes include blunt or penetrating trauma to the eye.
Glomerulations appear as checkerboard/lattice patterns, splotches, or pinpoint-sized red marks on the bladder. [7] [8] Glomerulations are classified into five grades that take into consideration the type and location of injury: Grade 0 (normal mucosa), Grade I (petechiae in at least two quadrants), Grade II (large submucosal bleeding), Grade III (diffuse global submucosal bleeding), and Grade ...
Treatment depends on the location, extent, and cause of the bleeding. Often, treatment can reverse the damage that has been done. A craniotomy is sometimes done to remove blood, abnormal blood vessels, or a tumor. Medications may be used to reduce swelling, prevent seizures, lower blood pressure, and control pain.