Chemotherapy kills tumor cells but can also damage healthy cells and cause significant digestive disorders such as ulcers of the mouth, called mucositis. Mucositis are transient but their intensity may require special measures. Mucositis are painful and morphine gel or intravenous morphine is used to relieve pain.
However, the pain of oral mucositis induced by chemotherapy is not completely relieved by morphine administered intravenously.
As part of the study, the investigators want to evaluate an oral gel containing a small amount of morphine so that it acts directly on the mucositis. The investigators believe that the direct action of morphine on mucositis may be more effective on pain.
The objective of the study is to compare the analgesic efficacy of topical morphine gel versus placebo gel in the pediatric oncohaematology oral mucositis induced by chemotherapy in children treated with systemic opioids.
To confirm these results, we propose to conduct a randomized double-blinded study designed to compare the analgesic efficacy of morphine oral topical gel versus placebo gel in children over 5 years with mucositis induced by chemotherapy and treated with systemic opioids. This analgesic effect should reduce persistent pain to maintain oral feeding and thus delay the implementation of parenteral nutrition, and hence reduce the dose of systemic morphine and also reduce the adverse effects of opioids
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