What does petechial mean?
Petechial is a medical adjective describing small red or purple spots caused by bleeding beneath the skin. These spots, called petechiae, are usually only a few millimetres across and may result from conditions affecting blood vessels or clotting, although they can also follow pressure or coughing. The adjective is commonly used in expressions such as “petechial rash” and “petechial haemorrhage.” It is more precise than simply saying “a rash,” because it identifies the characteristic appearance and mechanism of the spots. In clinical descriptions, the term helps convey that tiny vessels beneath the skin have leaked blood. Recognising petechiae can be important because widespread or unexplained petechial bleeding may indicate a significant underlying condition. The word is technical rather than everyday, but it is widely understood by doctors, nurses, and other healthcare professionals.
adjectiveOf or relating to petechiae, the small red or purple spots that appear beneath the skin, typically as a result of bleeding into the skin. Characterized by, or resembling, such pinpoint hemorrhages.
- Of or relating to petechiae or to bleeding into the skin that produces small red or purple spots.
- Resembling or characterized by petechiae.
"The doctor was concerned by the petechial rash that had developed across the patient's torso."
"A petechial rash appeared after the viral infection."
"The severe thrombocytopenia can cause petechial hemorrhages and easy bruising."
Petechial spots are tiny clues written beneath the skin: a minute leak from tiny blood vessels can signal a significant medical condition.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does petechial come from?
Petechial derives from New Latin petechiae, the plural of petechia, a term derived from Greek petechia, a spot or bruise, itself related to Greek petein, “to bleed.” The adjective entered English in the 17th century in medical writing. Modern forms such as petechial haemorrhage and petechial rash developed from the same medical root.
Related word forms
How petechial is actually used
This is primarily a medical term, especially used in clinical descriptions of skin findings. The spelling haemorrhage is common in British medical writing, while hemorrhage is common in US medical writing.
Easily confused with petechial
Petechiae are the small red or purple spots themselves, whereas petechial is an adjective describing such spots, a rash, or bleeding into the skin.
Purpuric describes a purpura, a larger area of bleeding under the skin, while petechial more specifically refers to tiny pinpoint hemorrhages.