Overview

Purpura is a condition where small blood vessels leak blood under your skin, causing purple, red, or brownish spots to appear. These spots are distinct because they don't turn white or lighter in color when you press on them. Purpura can be caused by a wide range of things, from issues with your blood platelets or clotting abilities, to fragile blood vessels, infections, certain medications, or even vitamin deficiencies.

This condition can affect anyone, at any age. Some types of purpura are more common in children, while others, like "senile purpura" (now often called actinic purpura), are frequently seen in older adults due to skin becoming more fragile with age. It's important to know that purpura itself is not contagious. However, if an infection is the underlying cause of the purpura, that infection could be contagious. Seeing these spots can be worrying, and while sometimes they are harmless, they can also be a sign of an underlying condition that needs attention, so understanding what's happening is key.

Symptoms

You might notice several signs if you have purpura. Here are some of the most common:

Purple, reddish, or brownish spots - on the skin or sometimes on mucous membranes (like the inside of your mouth).
These spots do not blanch - (turn white or lighter) when pressed. This is a key sign.
The spots can be very small, like tiny pinpricks (called petechiae), or larger, more like bruises (called ecchymoses).
They may appear as a widespread rash or as individual, scattered spots.
Usually, purpura spots themselves are not itchy or painful, but the underlying condition causing them might have other symptoms like discomfort.
The size and number of spots can vary greatly, from just a few to many covering a large area.
Sometimes, other symptoms might occur depending on what's causing the purpura, such as fever if it's due to an infection, or joint pain with certain types like Henoch-Schönlein purpura.

Diagnosis

Figuring out why you have purpura usually starts with a visit to a healthcare professional. They will look closely at the spots on your skin and ask you about your medical history, any medications you're taking, and any other symptoms you've been experiencing. This conversation is really important to help them understand the possible causes.

To get a clearer picture, blood tests are often recommended. These tests can check your platelet count (platelets are tiny cells that help your blood clot), how well your blood is clotting, and look for signs of infection or inflammation. In some cases, if the cause isn't clear, a doctor might suggest a skin biopsy. This involves taking a tiny sample of the affected skin to look at under a microscope, which can help examine the blood vessels more closely. If there's a concern that your kidneys might be involved (which can happen with some types of purpura), a urine test might also be done.

Management & Treatment

Seeing tiny spots like petechiae appear on your skin, or on your child’s skin, can be alarming. Please know that how we approach these spots is centered entirely on figuring out why they appeared in the first place. The treatment for petechiae is really the treatment of the underlying cause.

For some, the cause is minor and the spots will fade on their own without any treatment. This is often the case if the petechiae were caused by straining from a bad cough, intense vomiting, or lifting something heavy. If a medication is the culprit, the spots typically disappear once you stop taking the drug, but please never stop a prescribed medication without talking to your doctor first.

Home Care and Self-Management

While home care won't treat the underlying cause of most petechiae, these steps can help you feel more comfortable if you're dealing with a mild illness causing the spots:

Rest: Give your body the time it needs to heal.
Stay Hydrated: Drinking plenty of fluids is always a good idea when you're feeling unwell.
Over-the-Counter (OTC) Help: For discomfort or fever associated with a viral illness, you might consider pain relievers like acetaminophen (Tylenol). However, it's wise to check with your doctor, as some OTC pain relievers (like NSAIDs) can sometimes affect blood clotting.
Gentle Care: A cold compress can be gently applied to an area for about 15 minutes to help soothe any associated inflammation.

It's important to remember that petechiae themselves aren't usually itchy or painful. The main goal of home care is to support your body as it recovers from whatever caused them.

Prescription and Medical Treatments

If your doctor discovers a more serious reason for the petechiae, a specific treatment plan will be created for you. This is why getting a proper diagnosis is so important.

Depending on the cause, your treatment plan could include:

Antibiotics: If a bacterial infection, such as strep throat, is the cause, your doctor will prescribe antibiotics to clear the infection. It is crucial to finish the entire course of medication, even if you start to feel better.
Corticosteroids: For conditions where the immune system is mistakenly causing inflammation or destroying blood platelets (like in Immune Thrombocytopenia or ITP), steroids may be prescribed to calm the immune response.
Platelet Transfusions: If your platelet count is dangerously low, your doctor may recommend a transfusion to reduce the risk of serious bleeding.
Discontinuing a Medication: If your doctor determines a medication you are taking is the cause, they will work with you to find a safe alternative.
Treatment for Underlying Conditions: Petechiae can be a sign of more significant health issues like blood disorders or leukemia. In these cases, a specialist, such as a hematologist or oncologist, will oversee a dedicated treatment plan which could involve chemotherapy or other targeted therapies.

The timeline for improvement depends entirely on the cause. For minor issues, the spots may fade within a week. For infections, they will clear as the infection is treated. For chronic conditions, managing petechiae is part of managing the larger health issue. The good news is that the spots themselves typically do not leave scars.

A gentle but important warning: Because petechiae can signal a serious, fast-moving illness like meningitis or sepsis, you should seek immediate medical attention if the spots appear suddenly, spread quickly, or are accompanied by fever, confusion, difficulty breathing, or severe headache. It is always better to be safe and have it checked out.

Duration & Outlook

How long purpura lasts really depends on what's causing it. If it's due to a temporary issue, like a reaction to a medication that's then stopped, the spots might clear up in days to weeks. However, if the purpura is linked to a chronic (long-term) condition, it might last longer, or it could come and go over time.

The good news is that the outlook is often positive if the underlying cause can be identified and managed. The purpura spots themselves will typically fade, much like a bruise does, though the color might change as they heal. It's important to watch for any warning signs that could indicate a more serious problem. These include purpura that spreads very quickly, purpura accompanied by a high fever, significant bleeding from other parts of your body (like your gums or nose, or in your urine or stool), or if you develop symptoms like a severe headache or confusion. If you notice any of these, it's crucial to seek medical attention right away.

Prevention

Preventing purpura mainly involves addressing or preventing the underlying conditions that can cause it. Since there are many different causes, prevention strategies can vary. For example, if purpura is caused by a specific medication, avoiding that medication (always under your doctor's guidance) would be the way to prevent it from happening again.

For older adults who experience actinic purpura (often called senile purpura) due to fragile skin and blood vessels, being gentle with the skin and protecting it from bumps and injuries can help reduce how often these spots appear. This might include wearing long sleeves or using moisturizers to keep the skin healthy. Maintaining good overall health, including a balanced diet rich in vitamins like C and K, can also support the health of your blood vessels and your body's clotting abilities. If you know certain activities or situations have led to purpura in the past, trying to avoid those triggers can also be helpful.

Causes & Triggers

Purpura happens when blood leaks from tiny blood vessels (capillaries) under the skin. There are many reasons why this might occur:

Platelet Issues: Your blood contains tiny cells called platelets that help it clot. If you don't have enough platelets (a condition called thrombocytopenia), or if your platelets aren't working properly, you might develop purpura.
Blood Clotting Problems: Other factors in your blood, besides platelets, help with clotting. If these are deficient or not working right, it can lead to purpura.
Inflammation of Blood Vessels (Vasculitis): Sometimes, the blood vessels themselves become inflamed, making them leaky. Conditions like Henoch-Schönlein purpura are examples of this.
Infections: Certain viral or bacterial infections can sometimes trigger purpura.
Medications: A number of medications can cause purpura as a side effect. These include blood thinners, some antibiotics, sulfa drugs, and others.
Vitamin Deficiencies: Lack of certain vitamins, especially Vitamin C (scurvy) or Vitamin K, can affect blood vessel strength or clotting.
Fragile Blood Vessels: As people age, their skin and blood vessels can become more fragile and prone to damage from minor bumps, leading to actinic (senile) purpura. Certain connective tissue disorders can also cause fragile blood vessels.
Trauma or Injury: Severe injury can cause bruising and purpuric spots. Sometimes even strong coughing or vomiting can cause tiny petechiae on the face or neck due to pressure.

Who is most likely to develop it? Anyone can develop purpura, but certain groups are at higher risk depending on the cause. Older adults are more prone to actinic purpura. Individuals with bleeding disorders, those taking certain medications (like anticoagulants), people with autoimmune diseases, or those with conditions affecting their bone marrow (where platelets are made) are also at increased risk. Children can develop specific types like Henoch-Schönlein purpura, often after an infection.

When to see a doctor

It's always a good idea to see a healthcare professional if you notice new or unexplained purple, red, or brownish spots on your skin, especially if they don't turn white when pressed. While some causes of purpura are not serious, others can be, so getting a proper diagnosis is important.

You should definitely seek medical attention if you notice:

The purpura spots are spreading rapidly or cover a large area of your body.
You have a fever, feel very unwell, or have significant pain or swelling along with the purpura.
You are experiencing unusual bleeding from other places, like your gums or nose, or you see blood in your urine or stool.
The purpura appears suddenly and without any obvious reason.
You are taking blood-thinning medication and develop purpura.

A doctor, and sometimes a dermatologist (a doctor specializing in skin conditions), can help figure out what's causing the purpura and ensure you get the right care. Don't hesitate to reach out to them; they are there to help you understand what's happening and guide you.

Frequently Asked Questions (FAQs):

Q: Is purpura the same as a regular bruise? A: While both purpura and bruises involve blood under the skin, they're not quite the same. Purpura spots are often smaller, can be more widespread, and don't always happen because of an obvious injury like most bruises do. More importantly, purpura often indicates an underlying issue with blood vessels, platelets, or clotting that needs to be investigated, whereas a common bruise is usually just from direct trauma to an area.
Q: Can stress cause purpura? A: It's not typical for stress to directly cause purpura. However, severe or chronic stress can sometimes affect your overall health, potentially weakening your immune system or worsening underlying conditions that might make you more susceptible to issues that could lead to purpura.
Q: Will purpura spots go away on their own? Whether purpura spots fade on their own really depends on what caused them. If the cause is temporary (like a minor injury or a medication that's stopped), the spots will usually fade over time, similar to how a bruise heals. However, if there's an ongoing underlying condition causing the purpura, new spots might keep appearing until that condition is managed.
Q: Is purpura dangerous? Purpura itself is a sign that something is happening with your blood vessels or blood. Whether it's dangerous depends entirely on its underlying cause. Some causes are minor and resolve easily, but other causes can be quite serious and require prompt medical attention. This is why it's so important to see a doctor if you develop purpura, so they can find out the reason and make sure you get the care you need.

References

Cleveland Clinic. (2022, February 22). Petechiae. Retrieved from https://my.clevelandclinic.org/health/symptoms/21636-petechiae
Healthline. (2023, July 11). Petechiae: Causes, Treatments, Pictures, and More. Retrieved from https://www.healthline.com/health/petechiae
Medical News Today. (2023, November 28). Petechiae: Causes and treatments. Retrieved from https://www.medicalnewstoday.com/articles/320597
Verywell Health. (2022, May 19). How Petechiae Are Treated. Retrieved from https://www.verywellhealth.com/how-petechiae-are-treated-5187801

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