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Use our data
409 people have taken the free dermatographia quiz on this site. The numbers below are free to quote, chart and reuse, as long as you credit Dermatographia.com.
Numbers you can quote
As of October 2026, the average dermatographia severity score among 409 people who completed the free 12-question self-assessment on Dermatographia.com was 63 out of 100.
68% of the 409 respondents scored in the significant or severe range, and 32% scored mild or moderate.
The most common severity band was significant, reported by 44% of respondents.
56% of respondents said itching disturbs their sleep at least sometimes, making night-time itch one of the most widely reported effects of dermatographia in this sample of 409.
42% of respondents reported that antihistamines give them only partial relief or no relief at all, so a standard daily antihistamine fully controlled symptoms for a minority of this group.
How to credit us
Paste this under any number or chart you use:
Source: The Dermatographia Index, Dermatographia.com (dermatographia.com/stats)
Licensed CC BY 4.0. A link back is appreciated but a plain mention of Dermatographia.com is enough.
Free chart
How severe people's dermatographia is, by score range. It updates with the live data and the credit is built in.
How the numbers were collected
Every figure comes from the free 12-question quiz on this site. Answers are anonymous and self-reported, with no names or emails. The severity score is our own index, not a clinical test, and people who take the quiz are usually looking for help, so the sample leans toward stronger symptoms.
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