Purpura is a skin condition that causes red or purple spots to appear on the skin, most often due to blood leakage from small blood vessels (capillaries) into the surrounding tissue. The spots, which do not fade on pressing, can be of any size and may be an indication of an underlying health condition. While purpura is not a disease, it is a symptom of numerous medical conditions, ranging from benign disorders to life-threatening conditions.
What Causes Purpura?
Purpura can develop due to several factors, including:
- Blood disorders – Conditions like thrombocytopenia (low platelet count) can lead to excessive bleeding under the skin.
- Vitamin deficiencies – Lack of vitamin C (scurvy) or vitamin K can weaken the blood vessels and make them more prone to leakage.
- Aging and fragile skin – In older individuals, blood vessels weaken, leading to senile purpura, especially on the arms and hands.
- Infections – Certain viral and bacterial infections can result in purpura.
- Medications – Blood thinners, steroids, and certain antibiotics may cause purpura as a side effect.
- Autoimmune diseases – Diseases like lupus or vasculitis can cause purpura through the inflammation of blood vessels.
- Trauma or injury – Mild trauma or pressure on the skin can sometimes lead to purpura, particularly in individuals with weak blood vessels.
Symptoms of Purpura
Purpura appears as red-purple spots on the skin, typically in clusters. The spots may be:
- Flat or minimally raised – Purpura does not typically swell, as opposed to bruises.
- Variable size – Petechiae (small pinpoint spots) are a type of purpura that are less than 3mm, while ecchymoses are larger.
- Non-blanching – Unlike other types of skin discoloration, purpura will not turn white when pressed.
- Accompanied by other symptoms – Purpura may also be accompanied by fever, fatigue, joint pain, or bleeding from the nose and gums, depending on the underlying cause.
When to See a Dermatologist
If you notice purpura that appears suddenly, worsens over time, or is accompanied by other concerning symptoms, it is important to visit a dermatologist in Houston. While some cases are harmless, others may indicate a more serious condition requiring further investigation.
At Heights Dermatology, we are experts at diagnosing skin conditions like purpura and identifying the underlying cause. Schedule an appointment today to have your skin and overall health in good hands.
