When should I call for help about chemotherapy side effects at home?

You should seek urgent advice if there is a high temperature, shivering, signs of infection, severe diarrhoea, repeated vomiting, inability to keep fluids down, confusion, chest pain, worsening breathlessness, heavy bleeding, or sudden weakness. Hospitals usually provide a 24-hour number for treatment-related concerns, and it is important to use it rather than waiting to see if symptoms settle. Even symptoms that seem small at first can become more serious when immunity is low. It is also worth calling for advice if pain is increasing, swallowing becomes difficult, or tiredness is suddenly much worse than usual. Families should keep all treatment contact details somewhere obvious and make sure everyone in the household knows where to find them, especially in the evening or overnight.