Prostate cancer and stomach pain

Prostate cancer begins in the prostate, which sits below the bladder rather than in the stomach. Pain in the lower abdomen, pelvis, back, or sides may come from the prostate, urinary blockage, constipation, muscle strain, infection, treatment effects, or another digestive problem. Advanced cancer can affect nearby structures or bones, but stomach pain by itself does not establish that cancer has spread. Difficulty passing urine, bloating, vomiting, fever, or changes in bowel movements give clinicians useful clues.

Note where the pain is, whether it is cramping or constant, what brings it on, and whether eating, urinating, or bowel movements change it. Share all medicines and recent treatments with the clinician. Assessment may include an abdominal examination, urine testing, blood tests, or imaging. Management depends on the cause and may involve treating urinary obstruction, infection, constipation, cancer, or treatment-related irritation. Prostate Cancer, Radiotherapy, Brachytherapy, and Bone-Strengthening Therapy provide related background.

Seek emergency care for severe or rapidly worsening pain, a hard or swollen abdomen, repeated vomiting, fainting, fever with feeling very unwell, blood in vomit or stool, inability to pass urine, or new leg weakness. Contact the oncology team promptly for persistent pain, pain that interrupts sleep, or new pain after a treatment. Do not assume a new symptom is caused by cancer or wait if it is escalating.

Ask which causes fit the pain's location and pattern, whether you need urine or imaging tests, and which pain medicines are suitable with your current treatment. Ask how to manage constipation or urinary symptoms and whom to contact if the pain changes overnight.