Are 'night sweats' the same as a 'fever'?

No. A fever is an elevated body temperature. Night sweats are a symptom, which can be caused by a fever, but they can also occur without a fever due to other conditions like hormonal changes or anxiety.

Can men experience night sweats?

Absolutely. While commonly associated with menopause in women, night sweats in men can be caused by infections (like TB), hormonal issues (low testosterone), cancer (especially lymphoma), anxiety, or certain medications.

When should I see a doctor about night sweats?

You should consult a doctor if night sweats are frequent, severe (drenching), persistent (lasting weeks), or accompanied by other symptoms like unexplained weight loss, fever, or fatigue.

Is 'night sweats' always a plural noun?

Yes, it is almost exclusively used in the plural form ('sweats'), as the symptom involves multiple episodes or a continuous state of sweating. You would not typically say 'a night sweat'.

night sweats

Intermediate

UK/ˈnaɪt ˌswɛts/US/ˈnaɪt ˌswɛts/

Medical, General

My Flashcards

Definition

Meaning

Excessive sweating during sleep, often to the point of soaking through sleepwear or bedding.

A physiological symptom that can be a sign of underlying medical conditions (e.g., infections, hormonal disorders, menopause, cancer), severe anxiety, or a side effect of medication. Also used metaphorically to describe a period of intense anxiety or worry.

Linguistics

Semantic Notes

Plural noun, typically used with definite or indefinite articles ('the', 'a case of', 'suffers from'). While describing a symptom, it is often treated as a condition in itself (e.g., 'manage night sweats').

Dialectal Variation

British vs American Usage

Differences

No significant lexical difference. Spelling of related words may differ (e.g., 'pyjamas' vs. 'pajamas').

Connotations

Identical in both dialects. Primarily a medical/symptom term.

Frequency

Equally common in both UK and US English, particularly in medical and general health contexts.

Vocabulary

Collocations

strong

experiencesuffer fromcausetreatseveredrenchingmenopausal

medium

bothersomeunexplainedpersistentaccompanyrelieveepisode of

weak

badregularoccasionalmilddeal withwake up with

Grammar

Valency Patterns

Patient + experience + night sweatsNight sweats + be + caused by + conditionSuffer from + night sweats

Vocabulary

Synonyms

Strong

drenching night sweatsprofuse nocturnal sweating

Neutral

nocturnal hyperhidrosissleep hyperhidrosis

Weak

sweating at nightwaking up sweaty

Vocabulary

Antonyms

night chillsdry sleep

Phrases

Idioms & Phrases

“[Metaphorical] He was having night sweats over the upcoming merger.”

Usage

Context Usage

Business

Rare. Only in metaphorical sense for extreme anxiety about a project or deal.

Academic

Common in medical, nursing, and psychological research papers.

Everyday

Common in general health discussions, especially regarding menopause or illness.

Technical

Standard term in clinical medicine, endocrinology, and oncology.

Examples

By Part of Speech

verb

British English

She was night-sweating so badly she needed to change the sheets.
Patients may night-sweat during a fever.

American English

He's been night sweating for weeks, which prompted the doctor's visit.
The medication can cause you to night-sweat.

adverb

British English

(Rarely derived) She woke up night-sweating profusely.

American English

(Rarely derived) He spent the night sweating uncomfortably.

adjective

British English

The night-sweat episodes were draining her energy. (compound modifier)
She kept a night-sweat diary for her consultant.

American English

It was a classic night-sweat symptom. (compound modifier)
He reported night-sweat frequency to his physician.

Examples

By CEFR Level

I wake up wet. I have night sweats.
The doctor asked if I had night sweats.

A high fever can often cause bad night sweats.
She went to the doctor because of her persistent night sweats.

One of the common side effects of this antidepressant is experiencing night sweats.
The patient presented with unexplained weight loss and drenching night sweats, prompting further investigation.

Night sweats, in the absence of a fever, can be a red flag for certain types of lymphoma.
Managing menopausal symptoms like night sweats often requires a combination of lifestyle changes and hormone therapy.

Learning

Memory Aids

Mnemonic

Imagine a knight (sounds like 'night') in full armour sweating heavily after a battle, but he's trying to sleep. Night + Sweats.

Conceptual Metaphor

ANXIETY IS A PHYSICAL SICKNESS ('The scandal gave him night sweats').

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

Avoid direct calque 'ночные поты' which sounds unnatural. Prefer 'сильная потливость по ночам' or 'ночная потливость'.
Do not confuse with 'hot flashes' ('приливы'), which are sudden feelings of heat, not necessarily during sleep.

Common Mistakes

Using singular 'night sweat'. (Incorrect: 'I had a night sweat.' Correct: 'I had night sweats.' or 'I had an episode of night sweats.')
Confusing it with simply being hot at night. Night sweats are typically severe and disruptive.

Practice

Quiz

Fill in the gap

After starting the new medication, she began to experience severe that disrupted her sleep.

Multiple Choice

Which of the following is MOST likely to be described using the term 'night sweats' in a medical context?

FAQ

Frequently Asked Questions

: No. A fever is an elevated body temperature. Night sweats are a symptom, which can be caused by a fever, but they can also occur without a fever due to other conditions like hormonal changes or anxiety.
: Absolutely. While commonly associated with menopause in women, night sweats in men can be caused by infections (like TB), hormonal issues (low testosterone), cancer (especially lymphoma), anxiety, or certain medications.
: You should consult a doctor if night sweats are frequent, severe (drenching), persistent (lasting weeks), or accompanied by other symptoms like unexplained weight loss, fever, or fatigue.
: Yes, it is almost exclusively used in the plural form ('sweats'), as the symptom involves multiple episodes or a continuous state of sweating. You would not typically say 'a night sweat'.