Pain is monitored, from the patient's home, using a computer application accessible from a smartphone or a computer with internet access.

This application will allow the patient to describe his or her pain by means of a self-questionnaire. Healthcare professionals (nurse coordinator, pain specialist and oncologist) will thus be able to remotely interpret the data collected, enabling them to provide patients with a rapid response to adapt their pain treatment without the patient having to travel to the establishment.

In addition to his standard follow-up, the patient benefits from a home follow-up of his pain for 6 months from his inclusion in the study.

The patient has to log on via the application, every week. to fill in the questionnaire to evaluate the pain over the past week.

The questionnaire consists of 4 questions to which the patient answers using a numerical scale from 0 to 10.

If the patient's pain is not controlled, the patient can log on in "emergency" mode as many times as he or she deems necessary.

A nurse path coordinator will be informed of each connection. Depending on the type of alert received, she may initiate a telephone consultation with the oncologist or pain specialist:

• If necessary within 24 hours of the connection if it is a weekly connection,
• Systematic within 3 hours if it is an emergency connection or if the data entered at the time of the weekly connection requires medical intervention.

Satisfaction is measured using the Patient Global Clinical Impression of Change (P-GIC) questionnaire.

The questionnaire consists of a single question posed to the patient via the application asking the patient what impact he or she believes telemedicine has had on the overall management of his or her pain. The patient has the following 8 propositions among which he must indicate the one that best corresponds to the perceived change: Don't know, Very strongly positive, Strongly positive, Slightly positive, No change, Slightly negative, Strongly negative, Very strongly negative.

Feasibility will be assessed by collecting :

Number of weekly connections actually made and validated up to 3 months post -inclusion.

Number of weekly connections actually made and not validated up to 3 months post-inclusion.

Number of emergency connections actually made and validated up to 3 months post-inclusion.

Number of emergency connections actually made and not validated up to 3 months post-inclusion.

A validated connection means that the patient has answered all the questions defined for the type of weekly or emergency connection chosen and that the application has acknowledged the connection.