dermatographia: Familial dermographism is a condition also known as skin writing. When people who have dermatographia lightly scratch their skin, the scratches redden into a raised wheal similar to hives. Signs and symptoms of dermatographia include raised red lines, swelling, inflammation, hive-like welts and itching. Symptoms usually disappear within 30 minutes. The exact cause of this condition is unknown. Treatment mayinvovle use of antihistamines if symptoms do not go away on their own.
| Name | L12_URTICA_DERTMATOG |
|---|---|
| Long name | Dermatographic urticaria |
| Hospital Discharge registry | ICD-10: L503 |
| Cause of Death registry | ICD-10: L503 |
| Level in the ICD-hierarchy | 4 |
| First defined in version | DF2 |
| Latin name | Urticaria derm[at]ographica |
| All | Female | Male | |
|---|---|---|---|
| Number of individuals | 844 | 655 | 189 |
| Unadjusted prevalence (%) | 0.39 | 0.53 | 0.20 |
| Mean age at first event (years) | 45.78 | 44.90 | 48.83 |
| Case fatality at 5-years (%) | 1.07 | 0.46 | 3.17 |
| All | Female | Male | |
|---|---|---|---|
| Median nb. of events per indiv. | 1.0 | 1.0 | 1.0 |
| Recurrence at 6 months (%) | 35.55 | 35.73 | 34.92 |
before Dermatographic urticaria
after Dermatographic urticaria
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