Related Experiment Video
Updated: May 2, 2026

Basophil Activation Test for Allergy Diagnosis
Published on: May 31, 2021
[Urticaria: diagnosis and treatment]
1Service de dermatologie et d'allergologie, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France; Inserm U945, laboratoire immunité et infection, 81, boulevard de l'Hôpital, 75013 Paris, France.
Urticaria is an inflammatory skin condition characterized by hives and angioedema. While acute urticaria may have allergic triggers, chronic urticaria is not allergic and is managed with antihistamines.
Area of Science:
- Dermatology
- Immunology
- Allergy
Context:
- Urticaria is a prevalent inflammatory skin condition.
- It manifests as transient skin/mucosal lesions (hives) or subcutaneous swelling (angioedema).
- Chronic urticaria persists for over six weeks.
Purpose:
- To define urticaria and its subtypes.
- To outline diagnostic approaches for acute and chronic urticaria.
- To detail current treatment strategies.
Summary:
- Urticaria stems from mast cell activation.
- Diagnosis relies primarily on clinical examination and patient history.
- Allergic causes are investigated for acute urticaria, but chronic forms are non-allergic.
- Treatment involves symptomatic management, primarily with second-generation antihistamines.
Impact:
- Provides a concise overview of urticaria diagnosis and management.
- Highlights the distinction between acute and chronic urticaria etiologies.
- Emphasizes the role of antihistamines as first-line therapy and outlines alternative treatments for refractory cases.
Related Concept Videos
Allergic Reactions: Anaphylaxis
Hypersensitivities
Types of Hypersensitivities
Hypersensitivity reactions are categorized into four types: Type 1, Type 2, Type 3, and Type 4. Each type has a distinct mechanism...
Allergic Reactions
Antiasthma Drugs: Mast Cell Stabilizers and Anti-IgE Drugs
Mast cell stabilizers, such as cromolyn (also known as sodium cromoglycate) and nedocromil (Tilade), are effective drugs in asthma management. These stabilizers hinder histamine release by skillfully obstructing the activation of mast cells and other cellular entities. Notably, they navigate this task without...
Peptic Ulcer Disease III: Clinical Manifestations and Diagnostic Studies
Few clinical manifestations differentiate gastric ulcers from duodenal ulcers. Distinctions in the location, timing, and pain relief are crucial for healthcare providers in differentiating between gastric and duodenal ulcers during clinical assessments.
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...

