Health experts are warning about an unexpected early sign of Alzheimer’s disease — one that could appear during a simple daily routine: taking a shower.

While most people associate Alzheimer’s with memory loss or confusion, specialists say the earliest warning signs often show up in small, overlooked behaviors. One of the most telling clues, they note, is a sudden change in personal hygiene habits, especially when it comes to showering.

Doctors have found that some individuals in the early stages of Alzheimer’s may begin to avoid bathing or showering altogether — often without realizing it. They might insist they’ve already showered, show irritation when reminded, or express fear and discomfort toward the act itself.

This behavior isn’t due to laziness or neglect. Experts explain that as Alzheimer’s progresses, sensory changes and confusion can make the shower experience overwhelming. The sound of rushing water, changes in temperature, or difficulty understanding the steps of washing can all trigger anxiety.

Another subtle red flag? Forgetting how to use familiar products, like soap or shampoo, or mixing them up entirely. Some may even begin washing only certain parts of the body, leaving others untouched — a small but telling shift that family members often notice too late.

Neurologists emphasize that these early changes can appear months or even years before severe memory loss sets in. Identifying them early gives families time to seek medical advice, explore therapies, and slow progression through lifestyle adjustments and proper care.

If you notice a loved one suddenly resisting showers or seeming unusually distressed during bathing, experts say it’s worth paying attention — because it could be more than just forgetfulness.

Sometimes, the earliest signs of Alzheimer’s aren’t found in memory tests — but in the moments we least expect, like under a stream of water.