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Climate, Humidity, and Population-Level Interest in Dry Skin: Infodemiology Analysis Using Google Trends Across the
Kimiya Aframian1, Shaya Naimi2, Joy Xu3
1Department of Dermatology, Stanford Medicine, Stanford, CA, United States.
JMIR Dermatology
|May 25, 2026
Summary
Climate significantly impacts dry skin concerns, with lower temperatures and humidity correlating to increased online searches for xerosis and moisturizers. This suggests population search behavior mirrors climate-driven dermatologic burdens across the US.
Area of Science:
- Dermatology and Environmental Science
- Epidemiology and Public Health
Background:
- Climate factors like temperature and humidity are linked to xerosis (dry skin), a condition causing itchiness and reduced quality of life.
- Environmental conditions influence skin barrier function, with extreme climates potentially worsening conditions like atopic dermatitis.
- Low humidity and high temperatures can increase water loss from the skin, leading to inflammation.
Purpose of the Study:
- To investigate the connection between climate variables (temperature, humidity) and public interest in dry skin and moisturizers in the US.
- To bridge traditional epidemiology with online search data to understand climate's impact on skin health concerns.
Main Methods:
- Utilized NOAA climate data (average temperature, dew point) and Google Trends search interest for dry skin/moisturizer terms by state (2016-2025).
- Analyzed associations between climate variables and normalized search interest using linear regression.
- Employed R for statistical analysis of publicly available data.
Main Results:
- Lower average temperatures and dew points (humidity proxy) correlated with higher search interest for dry skin.
- Warmer, more humid regions showed decreased search interest for dry skin and related products.
- Both temperature and dew point exhibited significant negative associations with online search activity.
Conclusions:
- Public online search behavior for xerosis effectively reflects national climate-related dermatologic trends.
- Climate conditions appear to influence population-level concerns and behaviors regarding dry skin.
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