A bruise may progress through shades such as:

Red → purple/blue → green → yellow/brown → fading

The exact pattern varies depending on the depth and size of the injury, skin tone, and individual healing.

The color alone generally cannot tell you what caused the bruise.

For example, a purple bruise isn't automatically more dangerous than a yellow one.

What matters more is the overall clinical picture.

What About Bruises That Hurt?

Pain and tenderness are common with ordinary bruises.

The damaged tissue can become inflamed, producing soreness or sensitivity when touched.

A larger bruise may also cause more discomfort.

However, severe pain, significant swelling, restricted movement, or a rapidly enlarging bruise deserves attention.

A particularly painful swollen area after an injury could represent a deeper hematoma rather than a simple superficial bruise.

When Should You See a Doctor?

Consider making an appointment if you notice:

• Frequent unexplained bruising

• A sudden increase in bruising

• Very large bruises

• Bruises appearing without apparent injury

• Frequent nosebleeds

• Bleeding gums

• Heavy menstrual bleeding

• Blood in urine or stool

• Prolonged bleeding from small cuts

• Tiny red or purple spots appearing alongside bruises

• Significant fatigue or weakness

• Unintentional weight loss

• Recurrent infections

• Persistent fever or night sweats

You should also mention unexplained bruising if you've recently started a medication or supplement that could affect bleeding.

When Is Bruising an Emergency?

Most bruises are not emergencies.

However, certain situations require immediate medical attention.

Seek urgent care if unexplained bruising is accompanied by:

Severe or uncontrolled bleeding

Bleeding that doesn't stop with appropriate pressure requires prompt attention.

A severe headache or neurological symptoms

If unusual bleeding or bruising occurs alongside sudden weakness, confusion, difficulty speaking, severe headache, loss of coordination, or other neurological symptoms, seek emergency care.

A major injury

A large bruise following significant trauma—especially involving the head, chest, abdomen, or pelvis—may require evaluation even if the skin injury looks relatively minor.

Rapidly expanding swelling

A bruise that becomes rapidly larger, increasingly painful, or markedly swollen should be assessed.

Signs of internal bleeding

Symptoms such as vomiting blood, coughing blood, black or bloody stools, severe abdominal pain, fainting, or significant dizziness can represent serious bleeding and require urgent medical attention.

What Tests Might a Doctor Order?

If your bruising pattern is concerning, a doctor may begin with a medical history and physical examination.

They may ask:

• When did the bruising begin?

• How often does it happen?

• Where do the bruises appear?

• How large are they?

• Do you remember any injuries?

• Are you experiencing other bleeding?

• What medications do you take?

• What supplements do you use?

• How much alcohol do you consume?

• Does anyone in your family bruise or bleed easily?

Blood tests may also be considered.

Depending on the situation, testing can include a complete blood count, platelet count, clotting tests, and assessments of liver function or other relevant markers.

The specific tests depend on the person's symptoms and medical history.

Keep a Bruise Diary

If unexplained bruising happens repeatedly, keeping a simple record can be surprisingly useful.

Write down:

• Date you noticed the bruise

• Location

• Approximate size

• Color

• Whether it was painful

• Whether you remember an injury

• Medications taken

• New supplements

• Other symptoms

You can even take a photograph when you first notice it and another several days later.

This can help you and your doctor see whether the bruises are becoming more frequent, larger, or slower to heal.