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n. pl. pe·te·chi·ae (-kē-ī′)
A small purplish spot on a body surface, such as the skin or a mucous membrane, caused by a minute hemorrhage and often seen in typhus.

[New Latin, from Italian petecchie, pl. of petecchia, spot on skin, perhaps from Vulgar Latin *petīcula, short for *impetīcula, diminutive of Latin impetīx, impetīc-, variant of impetīgō; see impetigo.]

pe·te′chi·al adj.
pe·te′chi·ate (-ĭt) adj.
References in periodicals archive ?
A 5-cm, lacy, petechial skin rash was observed on the right inner thigh.
2] A petechial or maculopapular rash may also appear from day 3 to 10, the exact timing of which varies with the virus concerned but is also related to the patient's response to the infection.
Signs and symptoms of aplastic anemia are Pallor, Headache, Palpitations, dyspnea, Fatigue, Foot swelling, gingival bleeding, petechial rashes, Overt and/or recurrent infections and Oropharyngeal ulcerations.
falciparum, is petechial haemorrhaging in the brain, indicating that platelets may play a crucial role in malarial pathogenesis (28).
A physical exam reveals 1 to 2+ edema with a petechial rash of both feet extending into the right leg and medial thigh.
Early disease manifests as hemorrhagic inflammation with loss of the normal vascular pattern, petechial hemorrhages, and bleeding.
17) Endoscopic examination of the upper gastrointestinal tract of falcons affected with the viscerotropic form often shows petechial hemorrhages across the isthmus of the proventriculus and across the ventriculus.
Since petechial hemorrhages are observed in the indirect pathway where ischemic demage is present with the highest rate, they may be observed as hyperdens areas on CT.
The severity and intensity of the lesions were graded as following: (i) shedding of epithelium =10; (ii) petechial and frank hemorrhages= 20; (iii) one or two ulcers= 30; (iv) more than two ulcers= 40; and (v) perforated ulcers= 50.
On physical examination, the patient was appropriately alert and oriented, and no abnormality was detected except for mucosal petechial hemorrhages and ecchymosis.
The necropsy revealed abomasal congestion, petechial hemorrhages and mucosal suffusions.