To characterize the phenotype in patients with Morton's neuroma and to explore the effect of local administration of Xylocaine (lidocaine)
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The baseline phenotypic Quantitative sensory testing (QST) variables (e.g. heat, cold, touch and mechanical pain perception). Sensory tests will be performed to measure pain and skin sensitivity by use of different pressure (mN) and temperature ( C)
Timeframe: Before and after drug injection at Day 1
The baseline phenotypic Quantitative sensory testing (QST) variables (e.g. heat, cold, touch and mechanical pain perception). Sensory tests will be performed to measure pain and skin sensitivity by use of different pressure (mN) and temperature ( C)
Timeframe: Before and after drug injection at Day 14 (+/-9).
The baseline phenotypic Quantitative sensory testing (QST) variables (e.g. heat, cold, touch and mechanical pain perception). Sensory tests will be performed to measure pain and skin sensitivity by use of different pressure (mN) and temperature ( C)
Timeframe: Before and after drug injection at Day 28 (+/-18).
The effect of Xylocaine compared to placebo in QST variables. Sensory tests will be performed to measure pain and skin sensitivity by use of different pressure (mN) and temperature ( C)
Timeframe: After drug injection at Day 1.
The effect of Xylocaine compared to placebo in QST variables. Sensory tests will be performed to measure pain and skin sensitivity by use of different pressure (mN) and temperature ( C)
Timeframe: After drug injection at Day 14 (+/-9).
The effect of Xylocaine compared to placebo in QST variables. Sensory tests will be performed to measure pain and skin sensitivity by use of different pressure (mN) and temperature ( C)
Timeframe: After drug injection at Day 28 (+/-18).