Angioedema

11 min read

Angioedema is a condition that causes swelling of the skin and mucous membranes. It is caused by the release of histamine and other inflammatory substances from the body's mast cells. Angioedema can affect any part of the body, but is most commonly seen around the eyes, lips, hands, and feet. It is usually not life-threatening, but can be very uncomfortable and can cause difficulty breathing in some cases.

Causes of Angioedema

Angioedema can be caused by a variety of factors, including allergies, medications, infections, and underlying medical conditions. Allergies are the most common cause of angioedema, and can be triggered by foods, medications, insect stings, and other environmental factors. Medications such as ACE inhibitors, which are used to treat high blood pressure, can also cause angioedema. Infections such as the flu or strep throat can also cause angioedema. In some cases, angioedema can be caused by an underlying medical condition such as lupus or an autoimmune disorder.

Diagnosis of Angioedema

Angioedema is usually diagnosed based on a physical examination and a review of the patient's medical history. In some cases, additional tests may be necessary to determine the cause of the angioedema. These tests may include blood tests, skin tests, or allergy tests. In some cases, a biopsy may be necessary to confirm the diagnosis.

Prevention of Angioedema

The best way to prevent angioedema is to avoid the triggers that can cause it. If you have allergies, it is important to avoid the allergens that can trigger an attack. If you are taking medications that can cause angioedema, it is important to talk to your doctor about other options. If you have an underlying medical condition that can cause angioedema, it is important to follow your doctor's instructions for managing the condition.

Symptoms

  • Swelling of the skin
  • Itching or burning sensation
  • Redness or hives
  • Pain or tenderness
  • Difficulty breathing
  • Swelling of the throat or tongue
  • Hoarseness or difficulty speaking
  • Abdominal pain
  • Nausea or vomiting

If you experience any of these symptoms, it is important to seek medical attention right away. Angioedema can be a sign of a more serious underlying condition, such as an allergic reaction or an infection. Your doctor will be able to diagnose the cause of your symptoms and provide the appropriate treatment.

Take the Angioedema Assessment

Causes

Allergies

One of the most common causes of angioedema is an allergic reaction. Allergens such as pollen, dust, animal dander, and certain foods can trigger an allergic reaction that leads to swelling. In some cases, the reaction can be severe and require medical attention.

Medications

Certain medications can also cause angioedema. These include ACE inhibitors, which are used to treat high blood pressure, and non-steroidal anti-inflammatory drugs (NSAIDs), which are used to treat pain and inflammation. Other medications that can cause angioedema include antibiotics, anticonvulsants, and chemotherapy drugs.

Infections

Infections such as the flu, colds, and other viral illnesses can also trigger an attack of angioedema. In some cases, the infection can cause the body to produce antibodies that attack the body’s own tissues, leading to swelling.

Genetics

In some cases, angioedema can be caused by a genetic disorder. This type of angioedema is known as hereditary angioedema and is caused by a mutation in the C1 inhibitor gene. This gene is responsible for controlling the production of a protein that helps regulate the body’s immune system.

Stress

Stress can also trigger an attack of angioedema. Stress can cause the body to produce hormones that can lead to inflammation and swelling. In some cases, the stress can be so severe that it can cause an attack even without any other triggers.

Other Causes

In some cases, angioedema can be caused by an underlying medical condition such as an autoimmune disorder or a blood clotting disorder. It can also be caused by certain environmental factors such as exposure to cold temperatures or extreme heat.

Getting a Diagnosis

Diagnostic Tests

The first step in diagnosing angioedema is to take a thorough medical history. Your doctor will ask about your symptoms, any medications you are taking, and any allergies you may have. They may also ask about your family history of angioedema or other allergies. Your doctor may also perform a physical exam to look for signs of swelling.

Your doctor may also order a variety of tests to help diagnose angioedema. These tests may include blood tests, skin tests, and imaging tests. Blood tests can help identify any underlying medical conditions that may be causing the angioedema. Skin tests can help identify any allergies that may be causing the angioedema. Imaging tests, such as CT scans or MRIs, can help identify any structural abnormalities that may be causing the angioedema.

Treatment

Once the underlying cause of the angioedema has been identified, your doctor will recommend a treatment plan. Treatment may include medications, lifestyle changes, or other therapies. Medications may include antihistamines, corticosteroids, or immunosuppressants. Lifestyle changes may include avoiding triggers, such as certain foods or allergens. Other therapies may include light therapy, acupuncture, or massage.

It is important to follow your doctor’s instructions and take all medications as prescribed. If you have any questions or concerns about your treatment plan, be sure to talk to your doctor. With proper diagnosis and treatment, angioedema can be managed and the symptoms can be reduced.

Questions for Your Doctor

Symptoms

Describe your symptoms to your doctor. Be sure to include any areas of swelling, itching, or pain. Also, tell your doctor if you have any other symptoms, such as hives, difficulty breathing, or abdominal pain.

Triggers

If you know what triggers your angioedema, tell your doctor. Common triggers include certain foods, medications, and environmental factors. Knowing your triggers can help your doctor determine the best treatment plan.

Treatment

Discuss the treatment options with your doctor. Your doctor may recommend medications, such as antihistamines or corticosteroids, to reduce swelling and itching. In some cases, your doctor may also recommend lifestyle changes, such as avoiding certain triggers or using cold compresses.

Follow-up

Ask your doctor about follow-up visits. Your doctor may want to monitor your condition and adjust your treatment plan if necessary. Be sure to ask your doctor any questions you may have about your condition and treatment.

Treatment

Antihistamines

Antihistamines are medications that block the action of histamine, a chemical released by the body during an allergic reaction. They can help reduce the swelling and itching associated with angioedema. Common antihistamines include diphenhydramine (Benadryl), loratadine (Claritin), and cetirizine (Zyrtec).

Corticosteroids

Corticosteroids are medications that reduce inflammation. They can be taken orally or injected directly into the affected area. Common corticosteroids include prednisone, methylprednisolone, and hydrocortisone. Corticosteroids can help reduce the swelling and itching associated with angioedema.

Epinephrine

Epinephrine is a medication that can be used to treat severe allergic reactions, including angioedema. It works by narrowing the blood vessels and increasing blood pressure. It can be injected directly into the affected area or taken orally. Epinephrine should only be used in cases of severe allergic reactions.

Immunotherapy

Immunotherapy is a type of treatment that helps the body build up a tolerance to allergens. It involves exposing the body to small amounts of the allergen over time. This can help reduce the severity of allergic reactions, including angioedema. Immunotherapy is usually done in a doctor's office or clinic.

Avoiding Triggers

Avoiding triggers is an important part of managing angioedema. Common triggers include certain foods, medications, and environmental allergens. Identifying and avoiding triggers can help reduce the frequency and severity of angioedema episodes.

Drugs & Medications

Drugs Used to Treat Angioedema

There are several drugs that can be used to treat angioedema. These include antihistamines, corticosteroids, and epinephrine. Antihistamines are used to reduce the allergic reaction that causes the swelling. Corticosteroids are used to reduce inflammation and swelling. Epinephrine is used to treat severe cases of angioedema, as it can help to reduce the swelling and open up the airways.

Side Effects of Drugs Used to Treat Angioedema

The drugs used to treat angioedema can have side effects. Common side effects of antihistamines include drowsiness, dry mouth, and dizziness. Corticosteroids can cause stomach upset, weight gain, and increased blood pressure. Epinephrine can cause rapid heart rate, anxiety, and tremors.

Conclusion

Angioedema is a condition that causes swelling of the skin and mucous membranes. There are several drugs that can be used to treat angioedema, including antihistamines, corticosteroids, and epinephrine. These drugs can have side effects, so it is important to talk to your doctor about the risks and benefits of each drug before starting treatment.

Diet

Avoid Allergens

If you have a food allergy, it is important to avoid the food that triggers your symptoms. Common food allergens include peanuts, tree nuts, dairy, eggs, wheat, soy, fish, and shellfish. If you are unsure of what foods you are allergic to, talk to your doctor about getting tested.

Eat Anti-Inflammatory Foods

Eating a diet rich in anti-inflammatory foods may help reduce the risk of angioedema flare-ups. Foods that are high in anti-inflammatory compounds include fruits, vegetables, whole grains, nuts, and seeds. Additionally, omega-3 fatty acids, found in fatty fish such as salmon, can help reduce inflammation.

Limit Processed Foods

Processed foods are often high in sodium, sugar, and unhealthy fats, which can increase inflammation and worsen angioedema symptoms. Try to limit your intake of processed foods and opt for fresh, whole foods instead.

Stay Hydrated

Staying hydrated is important for overall health, and it can also help reduce the risk of angioedema flare-ups. Aim to drink at least 8 glasses of water per day, and avoid sugary drinks such as soda and juice.

Conclusion

Making dietary changes can help reduce the risk of angioedema flare-ups. Avoiding allergens, eating anti-inflammatory foods, limiting processed foods, and staying hydrated are all important steps to take. However, it is important to remember that diet alone is not enough to treat or prevent angioedema. If you are experiencing symptoms, talk to your doctor about other treatment options.

Lifestyle

Avoid Triggers

The first step in managing angioedema is to identify and avoid triggers. Common triggers include certain foods, medications, and environmental allergens. Keeping a diary of symptoms and triggers can help you identify what may be causing your angioedema. Once you have identified your triggers, you can take steps to avoid them.

Manage Stress

Stress can worsen angioedema symptoms, so it is important to find ways to manage stress. Exercise, yoga, and meditation can all help reduce stress levels. Additionally, talking to a therapist or counselor can help you learn how to better cope with stress.

Eat a Healthy Diet

Eating a healthy diet can help reduce the severity of angioedema symptoms. Eating a diet rich in fruits, vegetables, and whole grains can help reduce inflammation and improve overall health. Additionally, avoiding processed foods and foods high in sugar can help reduce symptoms.

Get Enough Sleep

Getting enough sleep is essential for managing angioedema. Aim for 7-8 hours of sleep each night. Additionally, try to go to bed and wake up at the same time each day. This will help regulate your body’s natural sleep cycle.

Stay Hydrated

Staying hydrated is important for managing angioedema. Aim to drink 8-10 glasses of water each day. Additionally, avoiding caffeine and alcohol can help reduce symptoms.

See a Doctor

If lifestyle changes do not help reduce your angioedema symptoms, it is important to see a doctor. Your doctor can help diagnose the underlying cause of your angioedema and recommend treatments to help reduce symptoms.