What Causes Hives in Adults at Night?

Urticaria

Hives, also known as urticaria, can occur in adults at night for various reasons. Hives are raised, itchy welts on the skin that can be triggered by various factors, including allergies, stress, or underlying medical conditions. Here are some possible causes of hives in adults at night:

  • Allergies:
    • Food Allergies: Consuming certain foods to which an individual is allergic can lead to an allergic reaction and the development of hives. This can happen during the day, and symptoms may persist or worsen at night.
    • Environmental Allergens: Exposure to allergens such as dust mites, pet dander, or pollen can trigger hives, and nighttime exposure may exacerbate symptoms.
  • Stress:
    • Stress and Anxiety: Emotional stress and anxiety can trigger the release of chemicals like histamine in the body, leading to the development of hives. Stress-related hives may be more noticeable at night when the body is at rest.
  • Physical Factors:
    • Temperature Changes: Sudden changes in temperature, including cooler temperatures at night, can sometimes trigger hives.
    • Pressure or Friction: Physical pressure on the skin, such as from tight clothing or friction, can lead to hives. This may occur during nighttime activities or when using certain bedding materials.
  • Medications:
    • Drug Reactions: Some medications can cause allergic reactions, including hives. If you’ve recently started a new medication, it’s essential to consider this as a potential cause.
  • Infections:
    • Viral or Bacterial Infections: Certain infections can lead to the development of hives. The symptoms may be more noticeable at night due to changes in the body’s immune response.
  • Underlying Medical Conditions:
    • Autoimmune Diseases: Conditions such as lupus or rheumatoid arthritis may be associated with hives.
    • Thyroid Disorders: Imbalances in thyroid hormones can contribute to hives.
  • Idiopathic Urticaria:
    • Unknown Causes: In some cases, hives may occur without an identifiable cause. This is referred to as idiopathic urticaria.

If you are experiencing persistent or severe hives, especially at night, it is advisable to consult with a healthcare professional for a thorough evaluation. They can help identify the underlying cause and recommend appropriate treatment, which may include antihistamines, corticosteroids, or addressing any specific triggers or contributing factors.

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