Introduction to Seen.  →

Patient Advocacy Platform

You are not
imagining it.

Seen. is a resource for people navigating complex, invisible illness, whether you have a diagnosis, are still searching for one, or have been told nothing is wrong when your lived experience shows something clearly is.

Explore Symptoms Open Tracker

Recognition

Does this sound familiar?

You don't need every symptom. If any or all of this list lands, Seen. is for you.

Heart races or pounds when you stand up
Extreme fatigue that rest doesn't fix
Dizziness or near-fainting, especially when upright
Sleep that doesn't restore you no matter how long
Blood pressure that drops when you change position
Brain fog: losing words, thoughts, the thread
A body that crashes after activity that used to be routine
Shortness of breath that feels out of proportion to what you're doing
Wheezing or airway tightness, sometimes without a known asthma diagnosis
Symptoms affecting multiple body systems at the same time
Flushing: sudden redness or warmth in the skin with no clear cause
Tests that come back normal despite being genuinely, significantly unwell
Hives, itching, or skin reactions with no identifiable allergen
Joints that bend too far, feel unstable, or give out
Swelling of the face, lips, throat, or hands without a known trigger
Joints that slip, subluxate, or dislocate easily, even with minor movement
Unpredictable reactions to foods, smells, medications, heat, or stress
Chronic pain that's hard to pinpoint and may be hard to explain
Allergy-like reactions that come and go and may not repeat with the same trigger
Skin that bruises easily, stretches unusually, or scars poorly
Frequent nausea, abdominal pain, diarrhea, or constipation
Migraines, with or without aura, with or without classic head pain
Widespread pain that moves, with no visible cause on imaging or bloodwork
Chronic headaches that are hard or impossible to alleviate
Pain that feels far more intense than the injury or stimulus should cause
Dizziness or spatial disorientation without clear cause
Light, sound, or smell sensitivity that is out of proportion and disabling
Burning, electric, or stinging pain in the hands or feet

Conditions Seen. Serves

The points of a constellation are distinct conditions that share biology, often appear together, and amplify one another in ways the medical literature is only beginning to map.

POTS · Secondary POTS · Autoimmune POTS · Dysautonomia · Orthostatic Hypotension · Neurocardiogenic Syncope · Inappropriate Sinus Tachycardia · Small Fiber Neuropathy · Long COVID / PASC · Gastroparesis · MCAS · Mast Cell Activation Disorder · Mastocytosis · Hereditary Alpha Tryptasemia · Idiopathic Anaphylaxis · Histamine Intolerance · Chronic Urticaria · Eosinophilic Esophagitis · IBS · SIBO · Endometriosis · Interstitial Cystitis / Bladder Pain Syndrome · Vulvodynia · Dysmenorrhea · PMDD · PCOS · Uterine Fibroids · Hashimoto's Thyroiditis · Lupus · Rheumatoid Arthritis · Lyme Disease · HSD · hEDS · EDS · Marfan Syndrome · Loeys-Dietz Syndrome · Mitral Valve Prolapse · Raynaud's Phenomenon · Cervicogenic Headache · Craniocervical Instability · Spontaneous CSF Leak · Tethered Cord Syndrome · Chiari Malformation · Migraine · Vestibular Migraine · Fibromyalgia · Central Sensitization Syndrome · CRPS · NDPH · Occipital Neuralgia · TMD · Medication Overuse Headache · ME/CFS · Sjogren's Syndrome

You are not too complex to help.

Everything on Seen.

Find what you need

Every section of Seen. is built around a specific need. Start anywhere. All of it is free to read.

About

Why I Built Seen.

Why Seen. exists, who built it, and what I commit to. Written by a patient who lived it and comes from a family of physicians.

Science

The Science

The four overlapping mechanisms behind this condition cluster, explained in plain language and grounded in peer-reviewed research.

Research

Research Library

28+ peer-reviewed sources across 7 categories, with DOI links and researcher profiles. Bring these to your physician. The science is real and it is growing.

Resources

Resources

Patient organizations, specialist finders, vetted communities, dietary guides, tools and trackers, and books. Curated for people navigating this specific constellation.

Tracker

Symptom Tracker

Log symptoms, triggers, and medications daily. Access a comprehensive symptom library organized by body system. Watch patterns emerge over time. Export physician-ready data. Everything stays on your device, nothing on our servers.

~30 yrs

Average time to MCAS diagnosis from symptom onset

4

The four mechanisms at the heart of Seen. See the science ↗

200+

Symptoms documented in plain language on Seen.