Tiny blood vessels, called capillaries, link the smallest parts of your arteries to the smallest parts of your veins. Petechiae form when capillaries bleed, leaking blood into the skin. The bleeding may be caused by:
- Prolonged straining
- Medicines
- Medical conditions
Prolonged straining
Tiny spots on the face, neck and chest can be caused by straining for a long time from coughing, vomiting, giving birth or lifting weights.
Medicines
Petechiae may result from taking some types of medicine, including phenytoin (Cerebyx, Dilantin-125, others), penicillin and quinine (Qualaquin).
Infectious diseases
Petechiae may be caused by infection with a fungus, virus or bacteria. Examples of these types of infection include:
- Cytomegalovirus (CMV) infection
- Coronavirus disease 2019 (COVID-19)
- Endocarditis
- Meningococcemia
- Mononucleosis
- Rubella
- Scarlet fever
- Strep throat
- Viral hemorrhagic fevers
Other medical conditions
Petechiae may be caused by other medical conditions. Examples include:
- Cryoglobulinemia
- Immune thrombocytopenia (ITP)
- Leukemia
- Scurvy (vitamin C deficiency)
- Thrombocytopenia
- Vasculitis
Causes shown here are commonly associated with this symptom. Work with your doctor or other health care professional for an accurate diagnosis.
May 26, 2023
- Gottlieb M, et al. Dermatologic manifestations and complications of COVID-19. American Journal of Emergency Medicine. 2020: doi.org/10.1016/j.ajem.2020.06.011.
- Bolognia JL, et al. Purpura and disorders of microvascular occlusion. In: Dermatology Essentials. 2nd ed. Elsevier; 2022. https://www.clinicalkey.com. Accessed Feb. 2, 2021.
- Soutor C, et al., eds. The differential diagnosis of purpura. In: Clinical Dermatology: Diagnosis and Management of Common Disorders. 2nd ed. McGraw Hill; 2022. https://accessmedicine.mhmedical.com. Accessed Feb. 2, 2023.
- Kelly AP, et al., eds. Bacterial infections. In: Taylor and Kelly's Dermatology for Skin of Color. 2nd ed. McGraw Hill; 2016. https://accessmedicine.mhmedical.com. Accessed Feb. 2, 2023.
- Gawkrodger DJ, et al. Vascular and lymphatic diseases. In: Dermatology: An Illustrated Colour Text. 7th ed. Elsevier; 2021. https://www.clinicalkey.com. Accessed Feb. 2, 2023.
- High WA, et al., eds. Morphology of primary and secondary skin lesions. In: Dermatology Secrets. 6th ed. Elsevier; 2021. https://www.clinicalkey.com. Accessed Feb. 2, 2023.
- 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. 9th ed. Elsevier; 2020. https://www.clinicalkey.com. Accessed Feb. 2, 2023.
- Strep throat: All you need to know. Centers for Disease Control and Prevention. https://www.cdc.gov/groupastrep/diseases-public/strep-throat.html?CD. Accessed Feb. 2, 2023.
- Leukemia. American Society of Hematology. https://www.hematology.org/education/patients/blood-cancers/leukemia. Accessed Feb. 2, 2023.
- National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health-topics/immune-thrombocytopenia. Accessed Feb. 2, 2023.
- Madden CC, et al., eds. Skin problems in the athlete. In: Netter's Sports Medicine. 3rd ed. Elsevier; 2023. https://www.clinicalkey.com. Accessed Feb. 2, 2023.