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The Cluster Headache Support Group – Patient-directed support, education, research, and advocacy — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Brain And Nervous System Disorders →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
4p-supportgroup.org ↗	67 match 1 shared topics	4P Support Group – Supporting individuals with a 4th chromosomal deletion	en	brain-and-nervous-system-disorders WordPress WooCommerce	robotsllmsaihumans	emailphone	none
clevelandstrokeclub.org ↗	66 match 1 shared topics	Cleveland Stroke Club \| Providing information and support for stroke survivors and their families.	US~ en	brain-and-nervous-system-disorders WordPress	robotsllmsaihumans	emailphone	none
adrag.org ↗	66 match 1 shared topics	ADRAG – Uniting Rotarians to tackle Alzheimer's/dementia, providing support, education, and resources to face the silver tsunami.	en	brain-and-nervous-system-disorders WordPress WooCommerce	robotsllmsaihumans	emailphone	none
ftwaynepsg.com ↗	65 match 1 shared topics	Parkinson's Support Group	en	brain-and-nervous-system-disorders Wix	robots llmsaihumans	emailphone	none
abovems.com ↗	65 match 1 shared topics	MS Support & Resources from Biogen – Above MS™	en	brain-and-nervous-system-disorders Adobe Experience Manager	robotsllmsaihumans	emailphone	none
rlietrom.com ↗	65 match 1 shared topics	Carlie Ostrom \| Neurology Advocate, Brain Injury Researcher, & Entrepreneur	en	brain-and-nervous-system-disorders	robotsllmsaihumans	emailphone	none
helpinghandepilepsy.com ↗	64 match 1 shared topics	The Helping Hand	CY~ en	brain-and-nervous-system-disorders	robotsllmsaihumans	emailphone	none
4braininjurysupport.com ↗	64 match 1 shared topics	Brain Injury Hub \| TBI & ABI Support, Resources & Community — Canada	en	brain-and-nervous-system-disorders	robotsllmsaihumans	emailphone	none
clevelandadrc.org ↗	64 match 1 shared topics	Cleveland Alzheimer's Disease Research Center - Cleveland Alzheimers Disease Research Center	en	brain-and-nervous-system-disorders WordPress	robotsllmsaihumans	email phone	none
afalongisland.org ↗	64 match 1 shared topics	The AFA Barbara Rabinowitz Education & Resource Center \| Alzheimer's Foundation of America	en	brain-and-nervous-system-disorders WordPress	robotsllmsaihumans	email phone	none
devargasinstitute.org ↗	64 match 1 shared topics	De Vargas Biotechnologies Research Institute	en	brain-and-nervous-system-disorders	robotsllmsaihumans	emailphone	none
chronicmigrainestudies.com ↗	64 match 1 shared topics	Migraine \| Migraine Clinical Research Study Information	en	brain-and-nervous-system-disorders Sitecore	robotsllmsaihumans	emailphone	none
chronicmigraineresearch.com ↗	64 match 1 shared topics	THRIVE Trial \| Migraine Clinical Research Study Information	en	brain-and-nervous-system-disorders Sitecore	robotsllmsaihumans	emailphone	none
chronicmigrainetrials.com ↗	64 match 1 shared topics	THRIVE Trial \| Migraine Clinical Research Study Information	en	brain-and-nervous-system-disorders Sitecore	robotsllmsaihumans	emailphone	none
mindassassin.com ↗	64 match 1 shared topics	EOD Resource Center - Early Onset Dementia Information	en	brain-and-nervous-system-disorders	robotsllmsaihumans	emailphone	none
adhdsciencelab.com ↗	64 match 1 shared topics	ADHDScienceLab \| ADHD Research & Clinical Studies	en	brain-and-nervous-system-disorders WordPress WooCommerce	robotsllmsaihumans	emailphone	none
hmsst.org ↗	64 match 1 shared topics	Herefordshire Multiple Sclerosis (MS) Support Trust - HMSST - local support for local needs in Herefordshire	en	brain-and-nervous-system-disorders WordPress	robotsllmsaihumans	emailphone	none
abi-waiver-program.com ↗	64 match 1 shared topics	Acquired Brain Injury ABI Waiver Program \| Assistance Support and Aid	en	brain-and-nervous-system-disorders Wix	robots llmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.