Here’s a long-form, reader-friendly blog post written in a clear, respectful tone suitable for seniors and caregivers. It’s informative without being alarmist and includes important medical disclaimers.
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Itching is something most of us experience at some point in life. Dry skin, allergies, insect bites, or reactions to soap are common causes—especially as we age. But in rare cases, **persistent, unexplained itching** can be a sign that something more serious is happening inside the body.
For seniors, paying attention to changes in the body is especially important. While itching alone does **not** mean you have cancer, doctors have found that certain types of long-lasting or unusual itching can sometimes be associated with underlying cancers.
This article explores **eight body areas where persistent itching may warrant medical attention**, why it happens, and what seniors should know about when to see a doctor.
> **Important note:** This article is for educational purposes only. Itching is far more likely to have a harmless cause than cancer. Only a qualified healthcare professional can diagnose medical conditions.
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## Why Can Cancer Cause Itching?
Cancer-related itching—also called **paraneoplastic pruritus**—can occur even before other symptoms appear. It may be caused by:
* Chemicals released by cancer cells
* Immune system responses
* Bile salt buildup (in liver or bile duct cancers)
* Hormonal changes
* Nerve irritation
