# CK-Wissen
**Wikidata**: [Q1023791](https://www.wikidata.org/wiki/Q1023791)  
**Source**: https://4ort.xyz/entity/ck-wissen

## Summary
CK-Wissen is a German-language website dedicated to cluster headache, serving as a centralized resource for information on the condition. Launched in 1990, it operates under the domain ck-wissen.de and has been a key platform for cluster headache-related knowledge, including a wiki that was active from 2006 to 2021.

## Key Facts
- **Inception**: CK-Wissen was established in 1990.
- **Website Classification**: It is classified as a website, defined as a set of related web pages served from a single domain.
- **Domain**: The official website is hosted at [http://www.ck-wissen.de](http://www.ck-wissen.de).
- **Language**: The content is primarily in German.
- **Main Subject**: The website focuses exclusively on cluster headache.
- **Logo**: The logo is available at [https://commons.wikimedia.org/wiki/Special:FilePath/Cklogoblau.jpg](https://commons.wikimedia.org/wiki/Special:FilePath/Cklogoblau.jpg).
- **Wiki Integration**: From February 3, 2006, to May 18, 2021, CK-Wissen hosted a wiki with the interwiki prefix "ckwiss" and the URL structure [http://www.ck-wissen.de/ckwiki/index.php?title=$1](http://www.ck-wissen.de/ckwiki/index.php?title=$1).
- **Wikidata Presence**: It has a single sitelink (German Wikipedia) and is referenced in Wikidata with the Google Knowledge Graph ID `/g/122cn7ws`.

## FAQs
**What is the primary focus of CK-Wissen?**
CK-Wissen is dedicated to providing information and resources specifically about cluster headache, a severe neurological condition.

**When was CK-Wissen launched?**
The website was established in 1990, making it one of the earlier online resources for cluster headache information.

**Did CK-Wissen have a wiki?**
Yes, it hosted a wiki from February 3, 2006, to May 18, 2021, accessible via the interwiki prefix "ckwiss."

**In what language is CK-Wissen available?**
The website and its content are exclusively in German.

## Why It Matters
CK-Wissen plays a crucial role in the cluster headache community by providing a centralized, long-standing resource for sufferers, researchers, and healthcare professionals. As a niche platform, it addresses the lack of comprehensive information on this debilitating condition, offering support and education in a field where awareness and research are often limited. Its longevity since 1990 underscores its reliability and enduring relevance in the German-speaking medical community.

## Notable For
- **Specialization**: One of the few websites exclusively dedicated to cluster headache.
- **Longevity**: Active since 1990, making it a long-standing resource in its field.
- **Wiki Integration**: Hosted a dedicated wiki for over 15 years (2006–2021), fostering community-driven knowledge sharing.
- **German-Language Focus**: Provides critical information in German, addressing a linguistic gap in medical resources.

## Body
### **History and Establishment**
CK-Wissen was founded in 1990 as a website focused on cluster headache, a rare and severe form of headache disorder. Its early inception positions it as one of the pioneering online resources for this condition, predating many modern medical information platforms.

### **Website Structure and Content**
The website operates under the domain [http://www.ck-wissen.de](http://www.ck-wissen.de) and is classified as a "website" in Wikidata, defined as a collection of related web pages under a single domain. Its content is entirely in German, catering to German-speaking audiences seeking information on cluster headache.

### **Wiki Integration and Community Contributions**
From February 3, 2006, to May 18, 2021, CK-Wissen hosted a wiki accessible via the interwiki prefix "ckwiss." The wiki allowed users to contribute and edit content, fostering a collaborative environment for sharing knowledge about cluster headache. The wiki's URL structure followed the pattern [http://www.ck-wissen.de/ckwiki/index.php?title=$1](http://www.ck-wissen.de/ckwiki/index.php?title=$1), enabling dynamic content creation and community engagement.

### **Visual Identity and Branding**
The website's logo is available on Wikimedia Commons at [https://commons.wikimedia.org/wiki/Special:FilePath/Cklogoblau.jpg](https://commons.wikimedia.org/wiki/Special:FilePath/Cklogoblau.jpg), serving as a recognizable symbol for the platform.

### **Digital Presence and References**
CK-Wissen is referenced in Wikidata with a Google Knowledge Graph ID (`/g/122cn7ws`), indicating its recognition in structured knowledge databases. It has a single sitelink on German Wikipedia, reinforcing its credibility within the German-speaking digital ecosystem.

### **Role in the Cluster Headache Community**
As a niche resource, CK-Wissen addresses the specific needs of individuals affected by cluster headache, offering detailed information, support, and community-driven insights. Its long-standing presence since 1990 highlights its importance in filling gaps in medical knowledge dissemination, particularly in the German language.