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Phenylacetylene is a prototypical terminal acetylene, undergoing many reactions expected of that functional group. It undergoes semi hydrogenation over Lindlar catalyst to give styrene . In the presence of base and copper(II) salts, it undergoes oxidative coupling to give diphenylbutadiyne . [ 6 ]
More recently, awareness has increased with establishment of an ICD-10 code in 2016, and the publication of the first international consensus guidelines for FPIES diagnosis by the American Academy of Allergy, Asthma, and Immunology in 2017. [1] [6] To date, various studies have estimated the incidence of FPIES to be between 0.015% and 0.7%.
The skin eruptions are often pruritic and accompanied by fever, headache, a high number of neutrophils and eosinophils in the blood, and elevated blood levels of markers for inflammation (i.e. erythrocyte sedimentation rate and C-reactive protein). The skin eruptions typically end within a week after causative drug is discontinued.
In adults, up to 60% of all food allergic reactions are due to cross-reactions between foods and inhalative allergens. [4] OAS is a class II allergy where the body's immune system produces IgE antibodies against pollen; in OAS, these antibodies also bind to (or cross-react with) other structurally similar proteins found in botanically related ...
Allergic contact dermatitis (ACD) is a form of contact dermatitis that is the manifestation of an allergic response caused by contact with a substance; the other type being irritant contact dermatitis (ICD). Although less common than ICD, ACD is accepted to be the most prevalent form of immunotoxicity found in humans. [1]
Periodic fever syndromes are a set of disorders characterized by recurrent episodes of systemic and organ-specific inflammation.Unlike autoimmune disorders such as systemic lupus erythematosus, in which the disease is caused by abnormalities of the adaptive immune system, people with autoinflammatory diseases do not produce autoantibodies or antigen-specific T or B cells.
Malignant hyperthermia (MH) is a type of severe reaction that occurs in response to particular medications used during general anesthesia, among those who are susceptible. [1] Symptoms include muscle rigidity, fever, and a fast heart rate. [1] Complications can include muscle breakdown and high blood potassium.
The diagnosis of Stevens–Johnson syndrome is based on involvement of less than 10% of the skin. [2] It is known as TEN when more than 30% of the skin is involved and considered an intermediate form when 10–30% is involved. [3] SJS/TEN reactions are believed to follow a type IV hypersensitivity mechanism. [7]