Transient Pruritic Erythema as a Forme Fruste of Solar Urticaria.
Adult
Diagnosis, Differential
Erythema
/ diagnosis
Female
Follow-Up Studies
Humans
Male
Omalizumab
/ therapeutic use
Photosensitivity Disorders
/ diagnosis
Pruritus
/ diagnosis
Risk Assessment
Sampling Studies
Skin Tests
/ methods
Sunlight
/ adverse effects
Time Factors
Treatment Outcome
Urticaria
/ diagnosis
Journal
The Israel Medical Association journal : IMAJ
ISSN: 1565-1088
Titre abrégé: Isr Med Assoc J
Pays: Israel
ID NLM: 100930740
Informations de publication
Date de publication:
Apr 2020
Apr 2020
Historique:
entrez:
15
4
2020
pubmed:
15
4
2020
medline:
21
4
2020
Statut:
ppublish
Résumé
Solar urticaria (SU) is a rare and disabling photodermatosis. SU typically manifests as urticarial wheals and erythema appearing shortly after sun exposure. SU is often initially diagnosed clinically with subsequent confirmation through photoprovocation tests. Early diagnosis is important for correct management of patients. To present the clinical features of three cases of atypical presentation of SU and to discuss possible underlying mechanisms. We report a series of three patients who presented with transient pruritic erythema without wheals after sun exposure. All patients had photoprovocation tests conducted to confirm SU diagnosis and to determine their action spectra. Treatment outcomes were recorded. All three patients developed classical manifestations of SU during photoprovocation tests within the UVA1 spectrum. Two patients required high-dose irradiation to provoke urticaria. Erythema without urticaria can be the primary manifestation of SU, especially in countries with sunny climates where natural skin hardening is common. Such cases require a high index of suspicion for SU and highlight the importance of photoprovocation testing to confirm the diagnosis.
Sections du résumé
BACKGROUND
BACKGROUND
Solar urticaria (SU) is a rare and disabling photodermatosis. SU typically manifests as urticarial wheals and erythema appearing shortly after sun exposure. SU is often initially diagnosed clinically with subsequent confirmation through photoprovocation tests. Early diagnosis is important for correct management of patients.
OBJECTIVES
OBJECTIVE
To present the clinical features of three cases of atypical presentation of SU and to discuss possible underlying mechanisms.
METHODS
METHODS
We report a series of three patients who presented with transient pruritic erythema without wheals after sun exposure. All patients had photoprovocation tests conducted to confirm SU diagnosis and to determine their action spectra. Treatment outcomes were recorded.
RESULTS
RESULTS
All three patients developed classical manifestations of SU during photoprovocation tests within the UVA1 spectrum. Two patients required high-dose irradiation to provoke urticaria.
CONCLUSIONS
CONCLUSIONS
Erythema without urticaria can be the primary manifestation of SU, especially in countries with sunny climates where natural skin hardening is common. Such cases require a high index of suspicion for SU and highlight the importance of photoprovocation testing to confirm the diagnosis.
Substances chimiques
Omalizumab
2P471X1Z11
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM