Las petequias son manchas redondas pequeñas que aparecen en la piel como consecuencia del sangrado. El color rojo, marrón o púrpura de las petequias se debe al sangrado. Aparecen con frecuencia en racimos y pueden parecerse a una erupción cutánea. Generalmente, son planas al tacto y no pierden el color al presionarlas. En ocasiones, aparecen en la superficie interna de la boca o los párpados.
Las petequias son frecuentes y pueden indicar varias enfermedades, que van desde leves a muy graves.
Sept. 21, 2018
- Bolognia JL, et al., eds. Purpura: Mechanisms and differential diagnosis. In: Dermatology. 4th ed. Philadelphia, Pa.: Saunders Elsevier; 2018. https://www.clinicalkey.com. Accessed March 28, 2018.
- Gawkrodger DJ, et al. Vascular and lymphatic diseases. In: Dermatology: An Illustrated Colour Text. 6th ed. Edinburgh, U.K.: Elsevier; 2017. https://www.clinicalkey.com. Accessed March 28, 2018.
- Fitzpatrick JE, et al., eds. Morphology of primary and secondary skin lesions. In: Dermatology Secrets Plus. 5th ed. Philadelphia, Pa.: Saunders Elsevier; 2016. https://www.clinicalkey.com. Accessed March 28, 2018.
- LeBlond RF, et al., eds. The skin and nails. In: DeGowin's Diagnostic Examination. 10th ed. New York, N.Y.: McGraw-Hill Education; 2015. http://accessmedicine.mhmedical.com. Accessed March 28, 2018.
- Nachman RL, et al. Platelets, petechiae, and preservation of the vascular wall. New England Journal of Medicine. 2008;395:1261.
- Litin SC (expert opinion). Mayo Clinic, Rochester, Minn. March 12, 2015.
- Bennett JE, et al., eds. The acutely ill patient with fever and rash. In: Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases. 8th ed. Philadelphia, Pa.: Saunders Elsevier; 2015. https://www.clinicalkey.com. Accessed March 28, 2018.
- Raffini L. Evaluation of purpura in children. https://www.uptodate.com/contents/search. Accessed March 28, 2018.
- Wald ER. Group A streptococcal tonsillopharyngitis in children and adolescents: Clinical features and diagnosis. https://www.uptodate.com/contents/search. Accessed March 28, 2018.