Urticaria

Urticaria, commonly known as hives, is a skin condition characterized by raised, itchy welts or hives that can appear anywhere on the body. These welts are usually red or pale and can vary in size and shape. Urticaria is often accompanied by swelling (angioedema) in the deeper layers of the skin, particularly around the eyes and lips.
Causes of Urticaria
Urticaria can be triggered by various factors, and often, the exact cause may not be identified. Common causes include:
Allergic Reactions: Common allergens include foods (like nuts, shellfish, or eggs), medications, insect stings, or environmental factors (such as pollen or pet dander).
Infections: Viral, bacterial, or fungal infections can trigger urticaria, especially in children.
Physical Triggers: Factors such as pressure, temperature changes (heat or cold), sunlight, or sweating can cause physical urticaria.
Autoimmune Disorders: Conditions like lupus or thyroid disease can lead to chronic urticaria.
Stress: Emotional stress or anxiety can exacerbate or trigger hives in some individuals.
Medications: Certain drugs, including antibiotics, nonsteroidal anti-inflammatory drugs (NSAIDs), and opiates, can cause allergic reactions or sensitivities leading to urticaria.
Chronic Conditions: Chronic urticaria can be associated with long-term conditions like chronic infections or systemic diseases.
Symptoms of Urticaria
Raised Welts: Red or pale bumps on the skin that are often itchy.
Swelling: Common in areas such as the face, hands, feet, or genitals.
Itching or Burning Sensation: The affected areas may feel intensely itchy or burn.
Angioedema: Deep swelling of the skin and tissues, particularly around the eyes, lips, or throat.