Long-term dizziness after cancer treatment can stem from late-effect nerve damage, inner ear injury from specific medications like platinum-based chemotherapy, prior radiation near the brain or ear, persistent anaemia, cardiovascular shifts, or ongoing general physical deconditioning.

Common Long-Term Causes

• Ototoxicity (Inner Ear Damage): Certain past chemotherapy drugs (such as cisplatin or carboplatin) or cranial radiation can permanently injure the inner ear structures or vestibular system, leading to chronic imbalance or vertigo
• Persistent Anaemia: Low red blood cell counts reduce oxygen delivery to the brain, which can become a chronic issue causing ongoing light-headedness and fatigue
• Late Cardiovascular Effects: Radiation to the chest or certain targeted therapies can impact heart function or blood pressure regulation, resulting in orthostatic hypotension (dizziness when standing)
• Neuropathy: Peripheral nerve changes from past treatments can impair sensory feedback to the brain, disrupting normal balance
• Deconditioning: Extended inactivity or muscle loss during and after heavy treatments can leave the body prone to weakness and dizziness upon movement

Please see your treating team or GP if you are experiencing dizziness