Which drugs can cause fixed drug eruption?
The major categories of causative agents of fixed drug eruption include antibiotics, antiepileptics, nonsteroidal anti-inflammatory agents, sildenafil, and phenothiazines, although numerous other agents and certain foods such as cashews and licorice have also been reported as causative agents.
What type of hypersensitivity reaction is involved in a fixed drug eruption when it occurs in the oral cavity?
Fixed-drug eruption (FDE) is an unusual and rare adverse drug reaction. This type of reaction is actually a delayed type of hypersensitivity reaction that occurs as lesions recurring at the same skin site due to repeated intake of an offending drug.
Is fixed drug eruption an allergic reaction?
Fixed drug eruption is a distinctive cutaneous allergic reaction that characteristically recurs at the same site(s) on re-exposure to the medication or other chemical agent.
What is fixed drug reaction?
INTRODUCTION. Fixed drug eruption (FDE) is a distinctive type of cutaneous drug reaction that characteristically recurs in the same locations upon reexposure to the offending drug.
How do you get rid of drug eruption rash?
Therapy for exanthematous drug eruptions is supportive in nature. First-generation antihistamines are used 24 h/d. Mild topical steroids (eg, hydrocortisone, desonide) and moisturizing lotions are also used, especially during the late desquamative phase.
What causes a drug eruption rash?
A drug rash or other reaction may occur for several reasons, such as: an allergic reaction. a buildup of the drug that causes toxicity to the skin. a drug makes the skin more sensitive to sunlight.
Is fixed drug eruption curable?
The main goal of treatment is to identify the causative agent and avoid it. Treatment for fixed drug eruptions (FDEs) otherwise is symptomatic. Systemic antihistamines and topical corticosteroids may be all that are required. In cases in which infection is suspected, antibiotics and proper wound care are advised.
How do you treat acetaminophen rash?
Anyone who develops a skin rash or reaction while using acetaminophen or any other pain reliever/fever reducer should stop the drug and seek medical attention right away.
What is a fixed drug reaction?
The term fixed drug eruption (FDE) describes the development of one or more annular or oval erythematous patches as a result of systemic exposure to a drug; these reactions normally resolve with hyperpigmentation and may recur at the same site with reexposure to the drug.
How is non-pigmenting fixed drug eruption due to pseudoephedrine diagnosed?
A case of a non-pigmenting fixed drug eruption due to pseudoephedrine is reported. The reappearance of typical lesions at the same sites after oral challenge with 60 mg pseudoephedrine together with the absence of pigmentation confirm the diagnosis.
What are the possible adverse effects of pseudoephedrine?
Gastrointestinal adverse effects of pseudoephedrine may include anorexia and gastric irritation in approximately 5% of patients. Dry mouth, nose, or throat may occur in up to 15% of patients. [ Ref] Ocular affects of diphenhydramine may include blurred vision, diplopia, and dry eyes due to its anticholinergic effect. [ Ref]
What are the hypersensitivity reactions to diphenhydramine?
Hypersensitivity reactions to pseudoephedrine may also occur. Fixed drug eruptions secondary to pseudoephedrine have been reported. Most commonly, hypersensitivity to diphenhydramine manifests itself in patients receiving systemic drug after being sensitized to it by topical application.
What are the ocular and genitourinary effects of diphenhydramine (fluoxetine)?
Ocular affects of diphenhydramine may include blurred vision, diplopia, and dry eyes due to its anticholinergic effect. [ Ref] The genitourinary tract may be adversely affected due to the anticholinergic effects of diphenhydramine, resulting in urinary retention and dysuria. [ Ref]