Petechiae

Petechiae are small, pinpoint spots that appear on the skin as a result of bleeding from small blood vessels. They are usually red or purple in color and can be found on various parts of the body, including the skin, mucous membranes, and organs.

Causes

Petechiae can be caused by a variety of factors, including:

• Platelet disorders, such as thrombocytopenia (low platelet count) or platelet dysfunction
• Blood clotting disorders, such as hemophilia or von Willebrand disease
• Infections, such as sepsis or meningitis
• Medications, such as anticoagulants or steroids
• Trauma or injury to the skin or underlying tissues
• Cancer, such as leukemia or lymphoma
• Nutritional deficiencies, such as vitamin C or K deficiency

Symptoms

In addition to the appearance of small spots on the skin, petechiae may be accompanied by other symptoms, including:

• Easy bruising or bleeding
• Prolonged bleeding from cuts or injuries
• Nosebleeds or bleeding gums
• Heavy menstrual periods or vaginal bleeding
• Fatigue, weakness, or shortness of breath (in severe cases)

Diagnosis

Petechiae are typically diagnosed through a physical examination and medical history. Additional tests may be ordered to determine the underlying cause of the petechiae, including:

• Complete blood count (CBC) to check for platelet disorders or anemia
• Blood clotting tests, such as prothrombin time (PT) or partial thromboplastin time (PTT)
• Imaging studies, such as X-rays or CT scans, to rule out underlying conditions
• Bone marrow biopsy to check for blood cell disorders

Treatment

Treatment for petechiae depends on the underlying cause. In some cases, treatment may involve:

• Platelet transfusions or medications to increase platelet count
• Blood clotting factor replacement therapy
• Antibiotics or antiviral medications to treat underlying infections
• Corticosteroids to reduce inflammation and bleeding
• Surgery or other procedures to address underlying conditions, such as cancer or trauma

Prognosis

The prognosis for petechiae depends on the underlying cause and severity of the condition. In some cases, petechiae may resolve on their own with treatment, while in other cases, they may be a sign of a more serious underlying condition that requires ongoing management and care.

Frequently Asked Questions (FAQs)

What are petechiae?
Small, pinpoint spots on the skin due to bleeding under the skin.

What causes petechiae?
Low platelet count, blood clotting disorders, or inflammation of blood vessels.

Where do petechiae typically appear?
On the skin, often on arms, legs, and torso.

Are petechiae painful?
No, they are usually painless.

Can petechiae be a sign of a serious condition?
Yes, such as leukemia or severe infection.

How are petechiae diagnosed?
Physical exam and blood tests to check platelet count and clotting.

Can petechiae be treated?
Treatment depends on underlying cause, may include medication or transfusions.

Are petechiae contagious?
No, they are not contagious.

Can petechiae appear in children?
Yes, often due to viral infections or minor injuries.

Do petechiae always require medical attention?
Yes, to determine underlying cause and receive proper treatment.