CSU is characterized by wheals or angioedema lasting over six weeks. Most common symptoms are angioedema and hives with itching. Angioedema affects 40-50% of patients, with 10% reporting it as main symptom. Urticarial lesions typically last less than 24 hours
Treats seasonal allergic rhinitis in patients 12+ years. Used for chronic spontaneous urticaria in patients 18+ years. Reduces allergic symptoms like nasal congestion and urticaria
Urticaria presents as transient skin lesions with severe itching. Lesions typically last 20 minutes to 3 hours, then disappear. Most cases resolve within 6 weeks without scarring. Chronic urticaria lasts longer than 6 weeks
Drug hypersensitivity reactions result from immune system responses to drugs. Anaphylaxis requires immediate recognition and treatment. ADR affects up to 15% of hospitalized patients. Medications are leading cause of anaphylaxis-related deaths
Dimenhydrinate is a crystalline white powder with melting point 216-225°F. It is slightly soluble with pH between 6.8 and 7.3. The chemical formula is C17H21NO.C7H7ClN4O2
Nausea is a stomach discomfort with or without vomiting urge. Treatment depends on underlying cause. Healthcare provider helps determine appropriate medication