---
title: "What are night sweats"
description: "Learn what night sweats are, why menopause and perimenopause can cause them, and how these hot flashes disrupt sleep and comfort."
url: "https://www.myalloy.com/knowledge-base/what-are-night-sweats"
---

# What are night sweats

> Learn what night sweats are, why menopause and perimenopause can cause them, and how these hot flashes disrupt sleep and comfort.

## What are night sweats?

Night sweats are **hot flashes that happen at night**. During perimenopause and menopause, changing estrogen levels can throw off your body’s temperature control, so even a small shift in temperature can trigger a sudden rush of heat and heavy sweating while you’re asleep.

They often come on fast, can last from about 30 seconds to 10 minutes, and may leave your pajamas or sheets soaked. Some women also notice chills, flushing, or a racing heartbeat afterward. They’re very common in menopause.

Here at Alloy, we have a simple overview on [night sweats](https://www.myalloy.com/symptoms/night-sweats). If they’re messing with your sleep, you can also look at [menopause treatment options](https://www.myalloy.com/solutions).


[Learn More](https://www.myalloy.com/solutions)

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*This is a markdown version of [https://www.myalloy.com/knowledge-base/what-are-night-sweats](https://www.myalloy.com/knowledge-base/what-are-night-sweats) for AI/LLM consumption.*