Effectiveness of NMP and TDCS vs Pharmacological Treatment in Cancer Patients With Lower Limb Pain

the goal of this clinical trial is to compare in cancer patients: Is ultrasound-guided percutaneous neuromodulation useful for lower limb pain relief in cancer patients? Is direct current transcranial stimulation useful for relieving lower limb pain in cancer patients? Participants will recive treatments of ultrasound-guided percutaneous neuromodulation and DC Transcranial Stimulation Researchers will compare ultrasound-guided percutaneous neuromodulation and DC Transcranial Stimulation to see if pain in the lower extremities is reduced