It is important to be aware of the signs and symptoms of cancer as the earlier cancer is diagnosed, the more successful treatment might be.
Common cancer symptoms in children & young people
- Feeling very tired and exhausted all of the time and/or noticeable skin paleness
- Having lots of infections (such as ear, throat or chest) that don't go away or keep coming back
- Having flu-like symptoms that don't go away (such as lethargy, high temperature, being sick)
- Unexplained or excessive bleeding such as in urine, poo or when being sick
- Bruising easily or a rash of small red spots on the skin (called 'petechiae')
- Persistent and unexplained sweating or fever especially at night
- Aches and pains that don't go away, especially in the bones, joints, back or legs, and may be worse at night
- Unexplained new limp or leg weakness
- Changes when going for a poo such as constipation, diarrhoea, pain or feeling of not having finished
- Feeling a lump, swelling or unusual firmness anywhere on the body, especially in the abdomen, neck, chest, pelvis or armpits
- Losing a significant and unexplained amount of weight in teenagers
- Slow growth in children
- Change in behaviour such as persistent crying and screaming in young children, sleeping a lot, being off food
Important Notice
This page is intended to back up the information you get from the hospital, not to replace medical advice from a consultant.
Information last reviewed on 14th January 2026.
