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MCS Patient Medical-Care Guide

A Patient-Friendly Adaptation of the Canary Islands Multiple Chemical Sensitivity Care Protocol

Prepared by the MCS Survival Foundation

Important source notice

This guide is a simplified, patient-facing adaptation of the Canary Islands Multiple Chemical Sensitivity Care Protocol, issued by the Canary Islands Health Service. It is intended to help patients, caregivers, doctors, nurses, ambulance crews, dentists, surgeons, and hospital staff understand the environmental precautions recommended for people with Multiple Chemical Sensitivity.

The uploaded English copy appears to have been translated using Google Lens. Therefore, this guide should be described as based on or adapted from the Canary Islands protocol, rather than presented as an official English publication or a word-for-word certified translation.

Suggested website wording:
“This patient guide has been adapted from the Canary Islands Health Service Multiple Chemical Sensitivity Care Protocol. It summarizes the protocol’s principal recommendations in accessible language. It is not an official publication of the Canary Islands Government and does not replace the original protocol or individualized medical advice.”

1. What Is Multiple Chemical Sensitivity?

The protocol describes Multiple Chemical Sensitivity, or MCS, as an acquired chronic condition involving recurrent symptoms after exposure to low levels of multiple unrelated chemicals that were previously tolerated.

Symptoms may involve different organs and body systems. The severity, duration, and frequency of reactions can vary widely. Some symptoms may improve when exposure stops, while others may continue for a prolonged period.

The protocol also explains that MCS should not automatically be treated as the same thing as an allergy. It may be recorded under terms such as Multiple Chemical Sensitivity or Idiopathic Environmental Intolerance.

Commonly reported triggers may include

  • Perfumes and colognes
  • Air fresheners
  • Scented hygiene products
  • Laundry detergents and fabric softeners
  • Cleaning products and disinfectants
  • Paint, solvents, glue, and construction materials
  • Tobacco smoke
  • Vehicle exhaust
  • Pesticides and insecticides
  • Mold, dampness, and contaminated ventilation
  • Certain medications or medical materials
  • Recently renovated or painted spaces

2. Treatment and Management

The protocol states that there is currently no specific curative treatment for MCS.

Care should be individualized and may focus on:

  • Reducing symptoms
  • Treating other medical conditions
  • Improving quality of life
  • Reducing exposure to known triggers
  • Improving ventilation and air circulation
  • Providing psychological and social support where helpful
  • Helping the patient maintain as much independence and daily function as possible

The protocol identifies avoidance of known triggers as the most effective proven measure described in the document.

New treatments should be introduced carefully and individually. When possible, two new treatments should not be started at the same time, because that may make it difficult to identify the cause of an adverse reaction.


3. What Patients Should Carry

A person with MCS should consider carrying a medical-information folder, card, or phone document containing:

  • Full name
  • MCS diagnosis or suspected diagnosis
  • Severity level, when professionally documented
  • Known chemical triggers
  • Known medication reactions
  • Allergies and intolerances
  • Current medications
  • Emergency contact
  • Treating physician’s contact information
  • Previous anesthesia or surgical reactions
  • Safe products and materials
  • Copy of any hospital accommodation plan
  • Copy of relevant medical reports
  • Respirator or mask requirements
  • Personal communication needs

The protocol recommends that MCS be clearly recorded in the patient’s medical chart and communicated to hospital staff, surgeons, anesthetists, dentists, ambulance personnel, and other healthcare workers.


4. Before a Medical Appointment

Whenever possible, arrange the appointment in advance rather than arriving without preparation.

Ask the clinic to:

  • Schedule the patient early in the morning
  • Select a time when the waiting room is least busy
  • Remove air fresheners and scented devices
  • Avoid cleaning the room immediately before arrival
  • Avoid aerosols, disinfectant sprays, and fragranced products
  • Allow the patient to wait outdoors or in a private vehicle
  • Provide a separate waiting area when possible
  • Use a well-ventilated consultation room
  • Avoid recently painted, renovated, or remodeled rooms
  • Inform all staff who will meet the patient
  • Ask staff not to wear perfume or scented personal-care products
  • Allow the patient to wear a mask or respirator
  • Allow a support person when needed
  • Minimize waiting time and unnecessary room changes

The protocol recommends avoiding the use of cleaning products, aerosols, photocopiers, printers, and similar equipment in the consultation room while the patient is present.


5. What the Patient May Need to Bring

The patient may need permission to bring personal items that cannot safely be supplied by the medical facility.

These may include:

  • Drinking water in a tolerated container
  • Safe food
  • Unscented soap
  • Personal towels
  • Safe clothing
  • Safe bedding
  • Cotton sheets
  • Personal mask or respirator
  • Oxygen mask or tubing, when medically prescribed
  • Tolerated medications
  • Latex-free supplies
  • Personal hygiene products
  • Communication aids
  • Medical alert card
  • Written trigger list

The protocol recommends facilitating the patient’s ability to bring their own medical equipment, food, water, bedding, clothing, and unscented hygiene products.


6. Hospital Admission Planning

When the patient’s medical condition allows it, the protocol says alternatives to hospital admission may be considered.

When hospital admission is necessary:

  1. Record MCS prominently in the medical chart.
  2. Inform the relevant department before arrival.
  3. Notify doctors, nurses, anesthetists, assistants, cleaners, radiology staff, transport staff, and other departments involved.
  4. Identify a responsible clinical contact or reference team.
  5. Prepare the room before the patient arrives.
  6. Reduce transfers between departments whenever possible.
  7. Permit essential personal equipment and supplies.
  8. Listen carefully to the patient, because the patient may already know which products, rooms, or procedures have caused previous reactions.

The protocol emphasizes that patients with MCS are often knowledgeable about their illness and may provide important guidance about environmental control.


7. The Patient Room

The protocol recommends strict environmental control in the patient’s room.

Preferred room characteristics

  • A single-occupancy room
  • Private bathroom
  • No mold or dampness
  • No recent painting
  • No recent renovation
  • Clean ventilation system
  • Good air circulation
  • Door kept closed when appropriate
  • Located away from heavy traffic
  • Located away from chemical-storage areas
  • Located away from chemotherapy areas
  • Located away from printers, photocopiers, or fax machines
  • Located away from cleaning-supply rooms
  • Located away from smoking areas

A sign may be placed on the door stating that the room is a chemical-free, fragrance-free, or MCS-controlled area.


8. Cleaning the Room

The room should be prepared using the patient’s known tolerances.

The Canary Islands protocol recommends measures including:

  • Do not use air fresheners.
  • Do not use aerosol cleaners.
  • Do not use deodorizing sprays.
  • Avoid fragranced disinfectants.
  • Use cleaning supplies reserved only for that room.
  • Clean floors with water and sodium bicarbonate when appropriate.
  • Dust with a cotton cloth dampened with water.
  • Use water and sodium bicarbonate for sinks, toilets, and bathtubs when suitable.
  • Remove waste at least twice daily.
  • Coordinate cleaning with the patient’s tolerance and care schedule.
  • Avoid cleaning while the patient is in the room when possible.
  • Ventilate the room after cleaning.

Any infection-control requirement must still be determined by the healthcare facility. The patient guide should not instruct staff to abandon required infection-control procedures; instead, the safest tolerated alternative should be selected in consultation with the clinical team.


9. Bedding, Clothing, and Personal Materials

The protocol recommends:

  • Sterile or clean 100% cotton hospital gowns when available
  • 100% cotton bed linens
  • Cotton sleepwear
  • Unscented hygiene products
  • Unscented cleaning products
  • Latex-free gloves and materials where needed
  • Patient-specific drinking water
  • Avoidance of fragranced paper products
  • Avoidance of flowers and plants
  • Avoidance of newspapers or treated printed material in the room
  • Removal of meal trays, damp towels, and unnecessary materials promptly
  • Storage of printed records outside the room when practical

The patient’s personally tolerated products may be preferable when hospital products cannot be safely tolerated.


10. Staff Fragrance and Hygiene Precautions

Staff members who will come into direct contact with the patient should be informed before the patient arrives.

The protocol advises staff to:

  • Avoid perfume and cologne
  • Avoid fragranced deodorant
  • Avoid scented hand lotion
  • Avoid fragranced shampoo and hair products
  • Avoid hairspray and mousse
  • Avoid scented makeup
  • Avoid fragranced shower gel
  • Avoid smoke contamination
  • Use unscented personal-care products when possible
  • Avoid wearing clothing strongly scented by detergent or fabric softener

Only essential personnel should enter the controlled patient area.


11. Emergency Department Care

Emergency departments are especially difficult because of crowds, cleaning chemicals, perfumes, medications, disinfectants, and limited environmental control.

Emergency staff should:

  • Check for an MCS medical-alert card
  • Ask the patient or caregiver about triggers
  • Ask what normally reduces the reaction
  • Review previous medical reactions
  • Move the patient away from high-traffic areas
  • Avoid recently renovated spaces
  • Avoid rooms recently treated with air fresheners or insecticides
  • Avoid chemical-storage areas
  • Allow use of the patient’s respirator
  • Permit a window to be opened when safe and practical
  • Reduce the number of unnecessary staff entering
  • Use latex-free materials where indicated
  • Avoid fragranced staff contact
  • Allow the patient’s safe water, food, clothing, bedding, and hygiene supplies
  • Display an MCS warning on the door or chart
  • Tell the patient that staff understand the condition and will attempt to provide necessary accommodations

The protocol also recommends identifying the patient as having MCS in the emergency admission record.


12. Symptoms Requiring Immediate Medical Attention

The protocol lists symptoms that should be promptly communicated to the treating doctor, including:

  • Chest pain
  • Seizures
  • Abnormal heart rhythm
  • Muscle spasms
  • Difficulty breathing
  • Severe dizziness
  • Fainting
  • Vertigo
  • Extreme fatigue
  • Skin swelling
  • Severe headache
  • Hives
  • Joint pain
  • Anaphylaxis
  • Memory loss
  • Abdominal pain
  • Confusion
  • Nausea or vomiting
  • Severe nervous-system symptoms
  • Disorientation

These symptoms can have many causes. MCS must not be used as a reason to ignore or delay assessment for another urgent medical condition.


13. Medical Transport and Ambulance Care

Before transport, the dispatch center and vehicle team should be informed that the patient has MCS.

Recommended precautions include:

  • Record MCS in transfer documents.
  • Tell the ambulance crew about known triggers.
  • Reduce fragrance and smoke contamination.
  • Avoid unnecessary air fresheners or fragranced cleaning products.
  • Allow the patient to use their own mask or respirator.
  • Transport the patient’s tolerated medical equipment.
  • Bring safe water, food, medication, clothing, bedding, and soap when needed.
  • Use the minimum necessary medication under medical direction.
  • Administer new medications gradually when clinically appropriate.
  • Follow the patient’s known medication-reaction history.
  • Prepare and ventilate the vehicle before scheduled transport when possible.

The protocol notes that some patients may react to inactive ingredients, fillers, dyes, binders, or glucose-containing products. These concerns must be reviewed by a doctor or pharmacist.


14. Surgery and Anesthesia

Surgery must be planned jointly by the surgeon, anesthetist, nursing staff, pharmacist, and patient.

Before surgery

  • Review the patient’s previous reactions.
  • Review all medications and excipients.
  • Clearly mark MCS in the surgical and anesthesia records.
  • Schedule surgery early in the day when possible.
  • Use a low-traffic recovery area.
  • Prepare the operating and recovery environments in advance.
  • Avoid unnecessary medication.
  • Introduce medications cautiously.
  • Confirm latex tolerance.
  • Review antiseptic, adhesive, dressing, suture, tubing, and plastic tolerances.
  • Allow the patient’s tolerated mask or equipment when safe.
  • Select the least reactive option based on the patient’s history.

The original protocol includes detailed statements about anesthetic agents and medications. Those statements should not be turned into instructions for patients to select or refuse medication on their own. Drug choice, dose, interactions, allergies, and anesthesia safety must be decided by licensed clinicians after reviewing the patient’s history and the original protocol.

A patient-facing guide should therefore say:

“Provide the complete Canary Islands protocol to the anesthetist and pharmacist. Ask them to review the medication and anesthesia sections directly before selecting medicines.”

15. Medication Safety

People with MCS may report reactions to:

  • Active ingredients
  • Preservatives
  • Fillers
  • Dyes
  • Binding agents
  • Coatings
  • Plastic tubing
  • Alcohol-containing preparations
  • Adhesives
  • Latex
  • Disinfectants
  • Topical products

General precautions

  • Review previous reactions before prescribing.
  • Use the fewest necessary medications.
  • Avoid introducing several new medicines simultaneously.
  • Use the lowest clinically appropriate dose when medically indicated.
  • Monitor closely after administration.
  • Record all adverse effects.
  • Ask a pharmacist to review inactive ingredients.
  • Do not assume that all reactions are allergies.
  • Do not stop essential medication without medical supervision.

The protocol contains medication-specific recommendations, but the translation should be checked against the original Spanish document before being used for clinical decisions.


16. Dental Care

Dental offices may contain fragrances, disinfectants, adhesives, plastics, acrylics, latex, anesthetics, and cleaning agents.

Before treatment:

  • Notify the dentist in advance.
  • Arrange the first appointment of the day.
  • Ask staff to avoid fragrances.
  • Identify tolerated gloves, anesthetics, and dental materials.
  • Avoid unnecessary scented products.
  • Allow ventilation or outdoor waiting.
  • Review previous reactions.
  • Consider testing materials or medicines only under professional supervision.
  • Provide the dentist with the original protocol and medical documentation.

The protocol specifically emphasizes communication with anesthesia and hospital personnel when surgery, dental procedures, prostheses, or implants are required.


17. Patient Communication Form

Patient name


Date of birth


Emergency contact


MCS diagnosis documented by


Severity or functional classification


Main chemical triggers



Medication reactions



Products I normally tolerate



Mask or respirator required

☐ No
☐ Sometimes
☐ In public buildings
☐ During all medical contact
☐ Almost continuously

Safe cleaning method


Safe water or food requirements


Known latex reaction

☐ Yes
☐ No
☐ Unsure

Important previous medical reactions



Additional accommodations




18. Quick Checklist for Healthcare Staff

Before the patient arrives

☐ MCS is clearly marked in the chart.
☐ Staff have been informed.
☐ The room has not been recently painted or renovated.
☐ Air fresheners have been removed.
☐ Aerosols and fragranced products have been removed.
☐ The room has been ventilated.
☐ Cleaning products have been reviewed.
☐ Fragrance-free staff have been assigned where possible.
☐ A private or low-traffic waiting arrangement has been prepared.
☐ The patient may bring tolerated supplies.

During care

☐ Ask before using any medication, disinfectant, adhesive, glove, or topical product.
☐ Minimize unnecessary staff and room transfers.
☐ Permit the patient’s respirator when clinically safe.
☐ Listen to the patient’s known reaction history.
☐ Introduce new treatments one at a time when possible.
☐ Record any adverse reaction immediately.
☐ Maintain ventilation and environmental control.

At discharge

☐ Provide written instructions.
☐ Document reactions and tolerated materials.
☐ Update the medical chart.
☐ Inform future providers of required accommodations.
☐ Return the patient’s personal equipment and supplies.


19. What This Guide Does Not Do

This guide:

  • Does not diagnose MCS
  • Does not replace medical evaluation
  • Does not prescribe medication
  • Does not guarantee that every recommendation is suitable for every patient
  • Does not override emergency medical judgment
  • Does not replace infection-control requirements
  • Does not replace the original Canary Islands protocol
  • Is not an official publication of the Canary Islands Government
  • Is not a certified translation of the original Spanish protocol

20. Recommended Attribution

Use this exact attribution on your website and downloadable guide:

Source and attribution:
This patient-friendly guide was prepared by the MCS Survival Foundation and adapted from the Multiple Chemical Sensitivity Care Protocol published by the Canary Islands Health Service. The source document supplied to the Foundation was an English version translated using Google Lens. This adaptation is provided for education and communication and is not an official Canary Islands Government publication, certified translation, medical prescription, or substitute for professional care. Healthcare professionals should consult the complete original protocol before making clinical decisions.

Suggested product title

MCS Hospital, Emergency and Medical-Care Guide

Subtitle:
Patient-friendly accommodations adapted from the Canary Islands Health Service MCS Protocol

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