"Scientists at the National Institutes of Health report they have discovered in mouse studies that a small molecule released in the spinal cord triggers a process that is later experienced in the brain as the sensation of itch.
The most frequent adverse reactions to Efudex (fluorouracil) occur locally and are often related to an extension of the pharmacological activity of the drug. These include burning, crusting, allergic contact dermatitis, erosions, erythema, hyperpigmentation, irritation, pain, photosensitivity, pruritus, scarring, rash, soreness and ulceration. Ulcerations, other local reactions, cases of miscarriage and a birth defect (ventricular septal defect) have been reported when Efudex (fluorouracil) was applied to mucous membrane areas. Leukocytosis is the most frequent hematological side effect.
Although a causal relationship is remote, other adverse reactions which have been reported infrequently are:
Central Nervous System: Emotional upset, insomnia, irritability
Gastrointestinal: Medicinal taste, stomatitis.
Miscellaneous: Herpes simplex.
Read the Efudex (fluorouracil) Side Effects Center for a complete guide to possible side effects
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