Vasos sanguíneos diminutos (capilares) unen las partes más pequeñas de las arterias con las partes más pequeñas de las venas. Las petequias aparecen cuando los capilares sangran y se derrama sangre en la piel. Este sangrado puede deberse a varias causas, que incluyen:

  • Esfuerzo prolongado
  • Ciertos trastornos médicos
  • Tipos específicos de lesiones
  • Medicamentos
  • Lesiones y quemaduras de sol

Prolonged straining

Tiny petechiae of the face, neck and chest can be caused by prolonged straining during activities such as:

  1. Crying
  2. Coughing
  3. Vomiting
  4. Childbirth
  5. Weightlifting

Certain medications

Petechiae may result from taking some types of medications, including:

  1. Anticoagulants (warfarin, heparin)
  2. Atropine (Atropen)
  3. Carbamazepine (Carbatrol, Epitol, Tegretol, others)
  4. Chloral hydrate (Somnote)
  5. Desipramine (Norpramin)
  6. Indomethacin (Indocin)
  7. Naproxen (Aleve, Anaprox, Naprosyn)
  8. Nitrofurantoin (Furadantin, Macrobid, Macrodantin)
  9. Penicillin
  10. Quinine (Qualaquin)

Infectious diseases

Petechiae may be caused by any of a number of fungal, viral and bacterial infections, including:

  1. Infección por citomegalovirus
  2. (an infection of the inner lining of the heart)
  3. Hantavirus pulmonary syndrome
  4. Meningococcemia
  5. Mononucleosis
  6. Rocky Mountain spotted fever
  7. Escarlatina
  8. Septicemia — an overwhelming bloodstream infection that uses up neutrophils faster than they can be produced
  9. Amigdalitis estreptocócica
  10. Fiebres hemorrágicas virales

Other medical conditions

Petechiae may also be caused by noninfectious medical conditions. Examples include:

  1. Vasculitis
  2. Trombocitopenia (low platelet count)
  3. Leucemia
  4. Scurvy (vitamin C deficiency)
  5. Vitamin K deficiency

Injuries or sunburns

Child abuse involving strangulation or smothering can cause petechiae in the face and eyes. Biting and spanking can also cause petechiae. Crush injuries, such as those experienced during car crashes, can result in petechiae of the face, neck and chest. Severe sunburn also can sometimes include petechiae.

Las causas que aquí se muestran se asocian comúnmente con este síntoma. Trabaja con tu médico u otro profesional de atención médica para obtener un diagnóstico preciso.

May 05, 2015