Can Psoriatic Arthritis Cause Bruising?

Understanding Psoriatic Arthritis

Psoriatic arthritis (PsA) is a chronic autoimmune condition characterised by both joint inflammation and skin lesions typical of psoriasis. In the UK, it affects approximately 2 out of every 100 people, causing symptoms such as joint pain, stiffness, and swelling, as well as patches of red, scaly skin.

The Link Between Psoriatic Arthritis and Bruising

While bruising is not a hallmark symptom of PsA, patients may notice increased bruising in affected areas. Bruising occurs when blood vessels break due to trauma and blood leaks into the surrounding tissue. This can be more prominent in individuals with PsA for several reasons.

Causes of Bruising in Psoriatic Arthritis

One potential cause is the medication used to manage PsA. Nonsteroidal anti-inflammatory drugs (NSAIDs), commonly prescribed for pain relief, can thin the blood, making bruising more likely. Additionally, corticosteroids, another class of drugs used to reduce inflammation, can weaken blood vessels over time, resulting in easier bruising.

Impact of Psoriatic Arthritis on Skin Health

Psoriasis Skin Involvement

The skin involvement inherent to psoriasis can also play a role in the appearance of bruises. Psoriatic lesions can make skin more fragile and susceptible to damage from minor bumps and scrapes.

“Patients with PsA may experience more noticeable bruising due to the compromised nature of their skin, as well as the medications used to manage their condition.”

Medications and Bruising

Understanding the Side Effects

Medications can significantly impact the likelihood of bruising. It’s crucial for patients to be aware of these side effects and to consult with their healthcare provider if they notice increased bruising.

Managing Bruising and Psoriatic Arthritis

Practical Tips for Patients

  • Discuss medication side effects with a healthcare provider.
  • Apply cold compresses to bruises to reduce swelling.
  • Protect affected joints and skin to prevent trauma.
  • Ensure a balanced diet to support skin health.

When to See a Doctor

If you have PsA and notice unusual bruising, it’s essential to consult with your doctor. While it may be a benign side effect of your medication, it can also signify underlying issues that require medical attention.


In conclusion, while PsA can contribute to an increased occurrence of bruising, it’s a complex interplay of factors, primarily medication side effects and skin fragility. By understanding these factors and taking preventative steps, individuals with PsA can manage their symptoms and maintain their quality of life.

Table 1: Common Medications for Psoriatic Arthritis and Their Impact on Bruising
Medication Effect on Bruising Notes
NSAIDs Increased risk Can thin the blood
Corticosteroids Increased risk May weaken blood vessels
DMARDs Variable Depends on the specific DMARD

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