Search PubMedSearch

PubMed · 1406166

Physical allergies.

Abstract

Allergic responses that occur as a result of exposure to physical stimuli are discussed. Most of these conditions are mediated by vasoactive substances, resulting in urticaria and/or angioedema. Susceptible individuals who engage in athletic activities may place themselves at particular risk for these problems. The physical allergies include cholinergic urticaria, exercise-induced anaphylaxis, cold urticaria, dermatographism, solar urticaria, and aquagenic urticaria. Management of these conditions includes patient education, selective avoidance, antihistamines, and, in some cases, induction of tolerance.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

R F Horan, A L Sheffer, W W Briner. 1992. Physical allergies.. https://pubmed.ncbi.nlm.nih.gov/1406166/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Detection of C1 inhibitor mutations in patients with hereditary angioedema.

BACKGROUND: Hereditary angioedema (HAE) results from a deficiency in the functional level of C1 inhibitor caused by mutations in the C1 inhibitor gene. The mutations responsible for HAE have been shown to be heterogeneous. OBJECTIVE: Because the identification of C1 inhibitor mutations may depend, in part, on the technique used to screen for mutations, we screened the entire C1 inhibitor coding region to identify mutations in a cohort of patients with HAE. METHODS: By using single-stranded conformational polymorphism analysis, 24 subjects with HAE from 16 different kindreds were screened for C1 inhibitor polymorphisms. C1 inhibitor mutations were identified by sequencing the exons containing identified polymorphisms. RESULTS: All 24 subjects with HAE had identifiable polymorphisms, involving exons 2, 3, 4, 5, or 8. Fourteen different C1 inhibitor mutations were identified: 8 missense, 1 nonsense, 4 frameshift, and 1 small deletion mutations. No large deletions or duplications were found. Nine of the 14 mutations represent newly recognized C1 inhibitor mutations, 6 of which involve exon 4. CONCLUSIONS: Single-stranded conformational polymorphism is an effective approach for identifying new mutations in HAE. Elucidation of the range of C1 inhibitor mutations causing HAE is important for both defining which residues are required for C1 inhibitor secretion or function and providing the basis for future studies to define the relationship between the C1 inhibitor genotype and disease severity.

Angioedema

Intestinal angioedema mimicking Crohn's disease.

Angioedema usually presents as episodic attacks of swelling of the face, airway and extremities, but it may also involve visceral tissues. A 58-year-old woman with repeated episodes of abdominal pain, nausea and vomiting had two laparotomies and was treated for Crohn's disease for two years before a diagnosis of acquired intestinal angioedema was made. This case provides important insights into the presentation of intestinal angioedema.

Angioedema