Situations
Why do teenagers sweat more?
Puberty activates the apocrine sweat glands and ramps up hormonal activity, so teenagers often sweat more, and more noticeably, than they did as children. Rapid growth, heightened emotions, and a newly active set of glands all combine during these years.
Before puberty the apocrine glands in the underarms and groin are largely dormant, and hormonal changes switch them on during adolescence.
Puberty activates the apocrine sweat glands and ramps up hormonal activity, so teenagers often sweat more, and more noticeably, than they did as children. Rapid growth, heightened emotions, and a newly active set of glands all combine during these years.
The short answer
Before puberty the apocrine glands in the underarms and groin are largely dormant, and hormonal changes switch them on during adolescence.
Surging hormones also make the body more reactive, so heat, stress, and excitement all translate into sweat more readily.
The teenage years bring intense social self-consciousness, which feeds emotional sweating in a self-reinforcing way.
Because apocrine glands are now active, this is also when noticeable body odor typically begins alongside the increase in sweat.
Rapid growth and a higher metabolic rate during these years generate more internal heat that the body must shed through sweating.
Emotional sweating on the palms, face, and underarms can feel especially intense in adolescence, when social situations carry high stakes.
For many teenagers this is simply the cooling and hormonal systems maturing into their adult form.
A little more detail
The jump in sweating can feel alarming to a teenager, but it reflects normal developmental biology rather than a problem.
The pairing of new sweat with new odor is a hallmark of this stage.
Self-consciousness about sweating can amplify it, since worrying about visible marks in front of peers adds an emotional trigger.
For some, heavier focal sweating that begins in these years is the first sign of a lasting focal pattern rather than a passing phase.
When to check with a clinician
If a teenager's sweating is severe enough to disrupt school, sports, or social life, or is clearly one-sided, a clinician can help assess it.
Key takeaways
- Puberty activates apocrine glands
- Hormones heighten sweat reactivity
- Odor often begins at this stage
Frequently asked questions
Why do teens start needing to manage body odor?
Apocrine glands switch on during puberty, and once bacteria act on their secretions, noticeable underarm odor develops for the first time.
Will heavy teenage sweating ease with age?
For many it settles somewhat after adolescence, though those with the inherited focal pattern may continue to sweat heavily into adulthood.
Is it normal for a teenager to sweat with no exertion?
Yes. Heightened hormonal and emotional reactivity in adolescence can trigger sweating at rest, particularly on the palms, face, and underarms.
Sources & further reading
Reputable organizations with more on sweating and related topics. Offered for further reading and general education, not as citations for any specific claim on this page.
General educational information about sweating. Not medical advice, and not a substitute for diagnosis or treatment by a qualified healthcare professional.
Explore it visually
When to see a clinician
Most sweating is harmless. Some patterns deserve prompt medical attention, though. Talk with a healthcare professional if you notice any of these:
- Sweating that starts suddenly or clearly changes pattern
- Sweating on only one side of the body
- Night sweats that soak the bedding
- Sweating with fever, unexplained weight loss, chest pain, or a racing heart
Prepare for a visit
A little prep makes an appointment far more useful.
Worth noting down
- When it started and how it has changed
- Where on the body it affects you most
- What you've already tried, and how it went
- Any medications or recent health changes
Questions to ask
- ?Could anything I'm taking be contributing?
- ?Which options might fit my situation?
- ?What can I try next if this doesn't help enough?