Mast Cell Activation Syndrome

As Mast Cell Activation Syndrome is often the cause of MCS, these websites explain MCAS:

Having this diagnosis can make getting your fragrance-free needs met easier. Medical people understand that a mast cell disorder is potentially life threatening.

DNA testing

One way is to have it done by 23andme for $199 (Nov 2016) at It is suggested you use a fake name and date of birth due to eugenics. Many Naturopathic Doctors are now studying this, so check with a local ND if you want. It helped me greatly.

Dr. Karen Threkel ND in Washington DC 202-244-6661 does this analysis over the phone. You’ll have to see if your insurance will cover any of the appointment. There’s a $250 90 minute intake appointment and then another appointment about the DNA results.

Managing Your Medical Care

Template of Letter for your Doctor to write and sign for your records

Chemical Sensitivity Network This site is in German but gives the ICD-10 code for MCS. Chemical Sensitivity (MCS – WHO ICD-10, T78.4). The US now uses the ICD-10.

How to Read Your Lab Tests (I have found this very handy.)

Medical Letter (Where many doctors go to learn about medications)

Pill Advised (Check for medication and supplement interactions.)

Getting Your Records

Hospitalization Preparation

Guide for Hospital Staff

Tips for Anesthetics and Hospitalization for People with Multiple Chemical Sensitivities

Tips for First Responders (You may want to post this on your door.)

What to Do if You Suspect Pesticide Poisoning

Hesperian Books free download Where There is No Doctor Where Women Have No Doctor and more

First Aid Kits for MCS


The Chronic Illness Workbook by Patricia A Fennell

The Take-Charge Patient: How You Can Get the Best Medical Care by Martine Ehrenclou

Multiple Chemical Sensitivity: A Survival Guide 2nd Ed. by Pamela Reed Gibson PhD ( has free excerpts)

Living Well With Multiple Chemical Sensitivity by Lisa Bradford

Environmental Medicine Practices

(Please note most of them will help you diagnosis the problem and give information on treatments they suggest. If you already know you have MCS and have found treatments that are helping, please do not obsess about getting an environmental medicine expert consultation. Few with MCS ever do and are living at the same level of quality of life as if they had. The main reason? The ONLY known treatmeant for everyone is safe housing. That is your primary health need. With that your health issues ought to be easier to manage on your own or with an open minded ND, DO or MD with an interest in learning about MCS.)

American Academy of Environmental Medicine

American College of Occupational and Environmental Medicine

Environmental Health Center (Dallas, TX)

Dr Grace Ziem (Maryland)

Vineyard Personalized Medicine (Martha’s Vineyard, MA) Dr. Lisa Nagy’s Practice See also

The Arizona Center for Advanced Medicine

Dr Walter Crinnion ND Scottsdale, AZ.  480-990-1111

Click here for a link to the medical journal articles authored by Dr. Crinnion

Toronto Women’s College Hospital (I have heard they test for EHS with a nine month wait list. What good an official diagnosis would do you, I do not know as it will not change the fact that we are bombarded with EMFs. But it may be helpful.)

The Nova Scotia Environmental Health Centre

Australasian College of Nutritional and Environmental Medicine ACNEM

The British Society for Ecological Medicine

Dental Hygiene

Holistic Dental Network

Plaque Off

Hesperian Where There Is no Dentist

Oil Pulling

Radius Organic Silk Floss