How long does immunotherapy take to work for melanoma?

Immunotherapy helps immune cells recognise and attack melanoma. That process can develop gradually, and inflammation caused by immune activity can sometimes make a tumour or scan look different before the treatment effect is clear. A single symptom or scan should therefore be interpreted alongside the wider clinical picture.

The schedule depends on the medicine, melanoma stage, treatment aim, previous therapies, and your general health. Your oncology team may monitor blood tests, symptoms, examination findings, and imaging at planned intervals. Do not judge the treatment by whether you feel an immediate change.

Attend each infusion or treatment visit and keep the monitoring appointments arranged by your oncology team. Record new symptoms, their start date, and whether they are worsening. Continue medicines only as advised, and check before starting supplements or non-prescribed treatments.

Immune-related effects can involve the skin, bowel, lungs, liver, hormone glands, nerves, or other organs. Early reporting gives the team a chance to assess the cause and decide whether treatment, observation, or additional care is needed.

Contact your cancer team promptly for new or worsening diarrhoea, severe abdominal pain, persistent cough, breathlessness, yellowing of the skin, dark urine, marked weakness, confusion, severe headache, vision changes, or a widespread blistering rash. Seek urgent help for severe breathing difficulty, collapse, or rapidly worsening symptoms.

Ask when your first response assessment is planned, which tests will be used, and how the team will distinguish treatment-related inflammation from melanoma change. Clarify who to contact outside appointments, which symptoms need same-day advice, and whether any current medicine should be adjusted.