Acute Urticaria Clinical Presentation

  • Author: Henry K Wong, MD, PhD; Chief Editor: Michael A Kaliner, MD   more...
 
Updated: Jun 14, 2011
 

History

Pruritus (itching) and rash are the primary manifestations of urticaria, and permanent hyperpigmentation or hypopigmentation is rare.

Lesions commonly last 20 minutes to 3 hours, disappear, and then reappear in other skin areas. An entire episode of urticaria often lasts 24-48 hours; individual lesions usually fade within 24 hours or so, but new lesions may be developing continuously. Rarely, acute urticaria can last 3-6 weeks.[28] Scars do not develop.

With delayed pressure urticaria, lesions may last as long as 48 hours. The lesions of urticarial vasculitis, which are palpable and purpuric, may last for several days or more and may lead to residual hyperpigmented changes.[29]

Typical lesions described by patients are edematous pink or red wheals of variable size and shape that are pruritic.[30] The lesions are often described as welts or hives, including pressure-induced hives, which can occur with elastic or tight clothing, as shown in the images below.[31] Patients may report a painful or burning sensation; such lesions are often associated with angioedema.[32] Pruritus of nonlesional skin may also occur.

Photograph of dermographism. Photograph of dermographism. Pressure urticaria (dermatographia) developed aftePressure urticaria (dermatographia) developed after strokes. Acute urticaria associated with dermatographism. Acute urticaria associated with dermatographism.

Determining whether the lesions have an allergic (IgE) or nonallergic (non-IgE) basis is helpful in the management of the patient. A complete thorough medical and travel history is important to provide clues to urticaria resulting from a new infectious or medical problem. Questions asked to determine possible allergic and nonallergic causes include the following:

  • Are the hives associated with any foods? Have any new foods been added to the diet?
  • Is the patient taking any regular medications, or have any new medicines been started? In particular, ask about aspirin, NSAIDs, antibiotics, over-the-counter (OTC) medications, herbs, and supplements.
  • Does the patient have any recent or chronic infections?
  • Are the hives caused by any physical stimuli (eg, heat, cold, pressure, vibration)?
  • Does the patient have any chronic medical conditions?
  • Is the urticaria associated with any substances that are inhaled or come in contact with the skin (which may occur in an occupational setting)?
  • Is the urticaria associated with insect bites or stings?
Next

Physical Examination

If any features of anaphylaxis (eg, hypotension, respiratory distress, stridor, gastrointestinal distress, swallowing problems, joint swelling, joint pain) are present, immediate medical intervention should occur.

Assess for any features of angioedema (deep tissue or submucosal edema).[33] Angioedema appears as swellings of the tissues, with indistinct borders around the eyelids and lips. Swellings may also appear on the face, trunk, genitalia, and extremities. The face, hands, and feet are involved in 85% of patients. As many as 50% of children who have urticaria exhibit angioedema with swelling of the hands and feet. Hereditary angioedema (C1 inhibitor deficiency) accounts for only 0.4% of cases of angioedema but is associated with a high mortality rate.

Lesions of urticaria can be polymorphic and vary from several millimeters to large, continuous edematous plaques that have smooth surfaces with polycyclic curved borders. The lesions do not have scales but show an intense erythema in the newest areas, with a trailing clearing region in older areas. The central clearing can cause a target configuration in expanding plaques. The advancing border shows a discrete edge followed by a faint, trailing, diffuse border.

Look for any atypical skin lesions. Lesions that are purpuric, nonblanchable, and palpable are characteristic of urticarial vasculitis. These lesions may leave residual pigmented changes. Tiny pinpoint hives are characteristic of cholinergic urticaria.[34]

Edema can be observed by slightly stretching the skin to demonstrate whitish centers. Occasionally, large annular urticarial lesions as large as 30 cm in diameter with polycystic borders are observed.

Examine for dermographism, as it is often observed in conjunction with urticaria. Itching, erythema, and a raised wheal occur in areas that are scratched or stroked with a blunt object, such as a tongue blade.[35] The examiner can use the end of a tongue blade or similar blunt object to scratch the patient's skin and observe the area over the next 5-15 minutes for the development of whealing with erythema, as shown in the following image.

Photograph of dermographism. Photograph of dermographism.

The remainder of the physical examination should be used to investigate any suspicions that were raised by the history.

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Contributor Information and Disclosures
Author

Henry K Wong, MD, PhD  Associate Professor of Dermatology, Ohio State University College of Medicine

Henry K Wong, MD, PhD is a member of the following medical societies: American Academy of Dermatology, American Association of Immunologists, International Society for Cutaneous Lymphomas, and Society for Investigative Dermatology

Disclosure: EISAI Consulting fee Speaking and teaching; Amgen Consulting fee Speaking and teaching; Abbott Labs Honoraria Speaking and teaching; Centocor Honoraria Speaking and teaching; Celgene Grant/research funds None

Coauthor(s)

Jeffrey P Callen, MD  Professor of Medicine (Dermatology), Chief, Division of Dermatology, University of Louisville School of Medicine

Jeffrey P Callen, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American College of Physicians, and American College of Rheumatology

Disclosure: Amgen Honoraria Consulting; Abbott Honoraria Consulting; Electrical Optical Sciences Consulting fee Consulting; Celgene Honoraria Safety Monitoring Committee; GSK - Glaxo Smith Kline Consulting fee Consulting; TenXBioPharma Consulting fee Safety Monitoring Committee

Kevin P Connelly, DO  Clinical Assistant Professor, Department of Pediatrics, Division of General Pediatrics and Emergency Care, Virginia Commonwealth University School of Medicine; Medical Director, Paws for Health Pet Visitation Program of the Richmond SPCA; Pediatric Emergency Physician, Emergency Consultants Inc, Chippenham Medical Center

Kevin P Connelly, DO is a member of the following medical societies: American Academy of Pediatrics, American College of Osteopathic Pediatricians, and American Osteopathic Association

Disclosure: Nothing to disclose.

Steven A Conrad, MD, PhD  Chief, Department of Emergency Medicine; Chief, Multidisciplinary Critical Care Service, Professor, Department of Emergency and Internal Medicine, Louisiana State University Health Sciences Center

Steven A Conrad, MD, PhD is a member of the following medical societies: American College of Chest Physicians, American College of Critical Care Medicine, American College of Emergency Physicians, American College of Physicians, International Society for Heart and Lung Transplantation, Louisiana State Medical Society, Shock Society, Society for Academic Emergency Medicine, and Society of Critical Care Medicine

Disclosure: Nothing to disclose.

Daniel J Hogan, MD  Clinical Professor of Internal Medicine (Dermatology), Nova Southeastern University College of Osteopathic Medicine; Investigator, Hill Top Research, Florida Research Center

Daniel J Hogan, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American Contact Dermatitis Society, and Canadian Dermatology Association

Disclosure: Nothing to disclose.

Shih-Wen Huang, MD  Professor Emeritus, Pulmonology and Allergy, Department of Pediatrics University of Florida College of Medicine

Shih-Wen Huang, MD, is a member of the following medical societies: American Academy of Allergy Asthma and Immunology

Disclosure: Nothing to disclose.

Harumi Jyonouchi, MD  Associate Professor, Division of Pulmonary Allergy/Immunology and Infectious Diseases, Department of Pediatrics, UMDNJ-New Jersey Medical School

Harumi Jyonouchi, MD is a member of the following medical societies: American Academy of Allergy Asthma and Immunology, American Academy of Pediatrics, American Association of Immunologists, American Medical Association, Clinical Immunology Society, New York Academy of Sciences, Society for Experimental Biology and Medicine, Society for Mucosal Immunology, and Society for Pediatric Research

Disclosure: Nothing to disclose.

M Scott Linscott, MD, FACEP  Professor, Division of Emergency Medicine, Professor of Surgery (Clinical), University of Utah School of Medicine

M Scott Linscott, MD, FACEP is a member of the following medical societies: American College of Emergency Physicians, Society for Academic Emergency Medicine, and Utah Medical Association

Disclosure: Nothing to disclose.

Umer Najib, MD  Clinical Research Fellow, Department of Medicine, Division of Allergy and Inflammation, Beth Israel Deaconess Medical Center

Disclosure: Nothing to disclose.

Robert A Schwartz, MD, MPH  Professor and Head, Dermatology, Professor of Pathology, Pediatrics, Medicine, and Preventive Medicine and Community Health, University of Medicine and Dentistry of New Jersey-New Jersey Medical School

Robert A Schwartz, MD, MPH is a member of the following medical societies: Alpha Omega Alpha, American Academy of Dermatology, American College of Physicians, and Sigma Xi

Disclosure: Nothing to disclose.

Javed Sheikh, MD  Assistant Professor of Medicine, Harvard Medical School; Clinical Director, Division of Allergy and Inflammation, Clinical Director, Center for Eosinophilic Disorders, Beth Israel Deaconess Medical Center

Javed Sheikh, MD is a member of the following medical societies: American Academy of Allergy Asthma and Immunology and American College of Allergy, Asthma and Immunology

Disclosure: Nothing to disclose.

Specialty Editor Board

Stephen C Dreskin, MD, PhD  Professor of Medicine, Departments of Internal Medicine, Director of Allergy, Asthma, and Immunology Practice, University of Colorado Health Sciences Center

Stephen C Dreskin, MD, PhD is a member of the following medical societies: American Academy of Allergy Asthma and Immunology, American Association for the Advancement of Science, American Association of Immunologists, American College of Allergy, Asthma and Immunology, Clinical Immunology Society, and Joint Council of Allergy, Asthma and Immunology

Disclosure: Genentech Consulting fee Consulting; American Health Insurance Plans Consulting fee Consulting; Johns Hopkins School of Public Health Consulting fee Consulting; Array BioPharma Consulting fee Consulting

Francisco Talavera, PharmD, PhD  Adjunct Assistant Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Medscape Salary Employment

Pamela L Dyne, MD  Professor of Clinical Medicine/Emergency Medicine, University of California, Los Angeles, David Geffen School of Medicine; Attending Physician, Department of Emergency Medicine, Olive View-UCLA Medical Center

Pamela L Dyne, MD is a member of the following medical societies: American Academy of Emergency Medicine, American College of Emergency Physicians, and Society for Academic Emergency Medicine

Disclosure: Nothing to disclose.

Dirk M Elston, MD  Director, Department of Dermatology, Geisinger Medical Center

Dirk M Elston, MD is a member of the following medical societies: American Academy of Dermatology

Disclosure: Nothing to disclose.

Chief Editor

Michael A Kaliner, MD  Clinical Professor of Medicine, George Washington University School of Medicine; Chief, Section of Allergy and Immunology, Washington Hospital Center; Medical Director, Institute for Asthma and Allergy

Michael A Kaliner, MD is a member of the following medical societies: American Academy of Allergy Asthma and Immunology, American Association of Immunologists, American College of Allergy, Asthma and Immunology, American Society for Clinical Investigation, American Thoracic Society, and Association of American Physicians

Disclosure: Alcon Consulting fee Consulting; Greer Consulting fee Consulting; Sanofi Consulting fee Consulting; Schering/Merck Consulting fee Consulting; Teva Consulting fee Consulting; Meda Honoraria Speaking and teaching; Ista Consulting

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Urticaria associated with a drug reaction.
Urticaria developed after bites from an imported fire ant.
Local urticaria on a patient with latex allergy who was touched with a latex glove.
Urticaria from drug reaction.
Photograph of dermographism.
Pressure urticaria (dermatographia) developed after strokes.
Acute urticaria associated with dermatographism.
Urticaria associated with acute group A beta-hemolytic streptococci infection.
Acute urticaria in a toddler affecting the face. Likely cause is postviral syndrome.
 
 
 
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