Tiny blood vessels (capillaries) link the smallest parts of your arteries to the smallest parts of your veins. Petechiae appear when capillaries bleed, leaking blood into the skin. A number of things can cause this bleeding, including:
- Prolonged straining
- Certain medical conditions
- Specific types of injuries
- Medications
- Injuries and sunburn
Prolonged straining
Tiny petechiae of the face, neck and chest can be caused by prolonged straining during activities such as:
- Crying
- Coughing
- Vomiting
- Childbirth
- Weightlifting
Certain medications
Petechiae may result from taking some types of medications, including:
- Anticoagulants (warfarin, heparin)
- Atropine (Atropen)
- Carbamazepine (Carbatrol, Epitol, Tegretol, others)
- Chloral hydrate (Somnote)
- Desipramine (Norpramin)
- Indomethacin (Indocin)
- Naproxen (Aleve, Anaprox, Naprosyn)
- Nitrofurantoin (Furadantin, Macrobid, Macrodantin)
- Penicillin
- Quinine (Qualaquin)
Infectious diseases
Petechiae may be caused by any of a number of fungal, viral and bacterial infections, including:
- Cytomegalovirus (CMV) infection
- Endocarditis
- Hantavirus pulmonary syndrome
- Meningococcemia
- Mononucleosis
- Rocky Mountain spotted fever
- Scarlet fever
- Sepsis — an overwhelming bloodstream infection that uses up neutrophils faster than they can be produced
- Strep throat
- Viral hemorrhagic fevers
Other medical conditions
Petechiae may also be caused by noninfectious medical conditions. Examples include:
- Vasculitis
- Thrombocytopenia (low platelet count)
- Leukemia
- Scurvy (vitamin C deficiency)
- 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.
Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.
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