What does urticaria look like?
Urticaria causes raised itchy wheals that can shift location over hours and often have surrounding redness. Symptoms vary and overlap other conditions, so internet information alone should not be used for diagnosis.
Features, causes and evaluation
1. Features, causes and risks Infection, medicines, foods, heat, cold, pressure or unknown causes may contribute. Individual wheals usually fade quickly, unlike persistent bruising rashes. A risk factor does not guarantee disease, and its absence does not exclude disease. Onset, duration, triggers, medicines and coexisting conditions change the assessment. 2. Clinical evaluation A health professional starts with history and examination and selects laboratory or imaging tests according to the likely possibilities. One out-of-range result does not always prove disease, and a normal result may not exclude every possibility. Age, pregnancy, medicines and clinical context matter.
Follow-up, prevention and when to seek help
1. Follow-up, prevention and safety Lip-tongue swelling needs assessment; throat tightness, breathlessness, dizziness or fainting is an emergency because of possible anaphylaxis. Chronic cases require trigger and comorbidity review. Treatment depends on diagnosis, severity, other conditions, pregnancy, medicines and personal preferences. Starting, stopping or changing a prescription without professional advice can be unsafe. 2. When to seek help Seek care for new, persistent, worsening or function-limiting symptoms. Sudden breathlessness, chest pain, fainting, new weakness or speech difficulty, uncontrolled bleeding, severe dehydration, confusion or risk of self-harm requires emergency help. This is general information and not a personal medical assessment.