Exhaustion that outlasts a hard week
You may sleep and still wake unrefreshed, cancel plans by noon, or feel flu-like after a walk that used to be easy. Brain fog often rides along. That experience is real. It is also not, by itself, a diagnosis this office will rename on the first visit.
Drs. Sani Kohen, D.C. and Tara Kohen, D.C. ask how long it has lasted, what makes it worse, and what physicians have already ruled out. Functional Medicine here does not claim to treat myalgic encephalomyelitis or chronic fatigue syndrome as a specialty protocol.
Thyroid, iron, and metabolic markers come first
A slow thyroid, low iron, and unstable glucose can each produce a tiredness that feels total. Those are common, testable questions, and they belong early. Advanced bloodwork can include iron studies and metabolic markers your physician may already be watching.
The thyroid dysfunction page explains why TSH alone can miss the question. A fuller panel is considered when temperature, bowels, and hair changed along with energy. Medication, if you take it, stays with the prescriber. FRI does not raise a dose from fatigue alone.
Sleep and gut are next, not a grab bag
Sleep and insomnia covers pain, caffeine, and a cortisol curve when nights are the obvious hole in the story. If you snore, gasp, or wake with headaches, a physician should evaluate sleep apnea. This office is not a sleep laboratory.
Gut symptoms earn a stool or breath test only when you have them. An organic acids test is sometimes used as a urine look at metabolic clues. It is not ordered because you are tired. It is ordered when the history makes that specific question worth the sample.
Mold or metals only if the history fits
A water-damaged building, a job with solvent or metal exposure, or a diet very high in certain fish can justify those workups. They are not the default explanation for fatigue. FRI will not tell you that all exhaustion is mold, and it will not open with a chelation plan.
Functional medicine at FRI does not replace a primary physician, endocrinologist, gastroenterologist, or mental health clinician. If mood, grief, or a medication is part of the exhaustion, keep those clinicians involved. Nutrition and supplementation follows the labs, without a brand protocol.
What to expect when you are seen for Chronic Fatigue
A complimentary 20-minute consultation is the place to see whether this workup fits. FRI is out of network. Superbills are available, and HSA or FSA funds are accepted. Hours are Monday–Thursday, 9–6.
Bring prior bloodwork, a medication list, and a short note on what a typical crashed day looks like. Testing starts with the most plausible drivers. You will not be enrolled in an ME/CFS protocol. Describe whether a short walk, a flight of stairs, or a full workday is what flattens you, because that scale changes which test is worth doing first.
South on the 55
The 55 south to the 73 is the usual path to La Alameda. About 16 miles. Twenty-five minutes is a good day. Forty is a 55 that is not cooperating. Address: 26400 La Alameda, Suite 100, Mission Viejo, CA 92691. Parking at the building. Monday through Thursday, 9 to 6.
Do not book the visit as a gap between school pickup in Old Town and a meeting. The exam needs you present, not halfway back on the freeway in your head. Call (949) 312-1754. A complimentary 20-minute consultation is available if you want to meet the doctors before an evaluation.
Chiropractic, rehab, and labs from Tustin
McKenzie Method work is a strong fit when back or neck pain has a direction that makes it better or worse. Corrective exercise is the homework. Adjustments are used when a specific joint is restricted, after the screen that says a thrust is appropriate.
Functional medicine visits cover thyroid, sleep, and gut health when those are the actual complaint. The Tustin chiropractor page collects the local routes into the three pillars.
Fees, referrals, and the doctors
Out of network. Superbill. HSA and FSA. No referral required. We will not change a prescription from your physician. Emergency symptoms, including sudden neurologic loss, go to the ER rather than to La Alameda.
Drs. Sani and Tara Kohen practice at FRI. Their backgrounds are on the about page. The suite and gym are on the office page.
Old Town, the Legacy, and the North Tustin hills
Tustin has three different weeks. Old Town is walkable, with short blocks and a lot of sitting in cafes and small offices. Tustin Legacy, on the old base, is wide, new, and built around a car. North Tustin and the hills toward Foothill are grades, older homes, and a drive down to the 55. A low back from Legacy commuting is not a knee from a North Tustin hill. We ask which one you live in before we guess at a load.
The District and the shopping around the Legacy add standing errands on top of desk jobs. Neck pain and headaches often belong to the screen. Knee pain and hip pain show up when hill residents add steps without a plan. Plantar fasciitis shows up in people whose walking is almost all concrete between the car and a door.
Extra context on Chronic Fatigue
Write a week of energy in plain numbers you understand: the hour you got up, the hour you had to stop, and what you did just before a crash. Note fevers, sore throats, and how long recovery takes after a short walk. Bring ferritin and thyroid labs if you have them so the first visit does not repeat a draw from last month. List every medication, including blood pressure pills and antihistamines, because several common drugs feel like fatigue. If a building smells musty, mention it, and also mention if it does not. Absence of an exposure is useful information.
The aim is a short list of tests that could change a decision, not a binder. You should know which question each tube or kit is asking. If results are ordinary, that is still a result, and the next step is not an automatic toxin story. Keep your primary physician in the loop. Functional Medicine can sit beside that care. It does not replace it, and it will not tell you the exhaustion has one hidden cause waiting in a single narrow panel. Ordinary explanations stay on the list until they are ruled out.
Questions patients ask
Do you treat ME/CFS with a set protocol?
No. FRI does not claim a specialty protocol for myalgic encephalomyelitis or chronic fatigue syndrome. Persistent exhaustion is taken seriously, and the visit looks for contributors such as thyroid pace, iron, glucose, sleep, and, when the history fits, gut or exposure questions. Your physicians remain in charge of any formal diagnosis and of medications.
Which labs come before a toxin test?
Thyroid testing and advanced bloodwork for iron and metabolic markers usually come before mold or metal testing. Those common drivers can look exactly like a mysterious fatigue. Exposure testing is added when a building, a job, or a diet makes it plausible. Ordering a scare panel first is not the approach.
What if I crash after exercise?
Say so. Post-exertional worsening changes how training is discussed, and it is a reason not to push a generic fitness plan. Neuromuscular Rehabilitation and Chiropractic Sports Medicine can still help pain, with load kept inside what you can repay. FRI will not promise that a supplement prevents a crash.
Can sleep apnea be sorted here?
No. If apnea is suspected, a physician should evaluate it. FRI is not a sleep-medicine lab. The office can look at pain that wakes you, caffeine, thyroid pace, and a cortisol curve on a DUTCH test when those questions fit. Those findings do not replace a sleep study your physician orders.
Related care for Tustin
Chronic Fatigue is handled at the Mission Viejo clinic, not in a satellite office in Tustin. The related pages below stay on that same visit and add the methods or neighboring problems that usually come up in the history.
- Tustin chiropractor
How people from Tustin reach 26400 La Alameda and what the three pillars cover.
- Chronic Fatigue clinical overview
The non-geographic condition page, if you want the clinic-wide explanation without the drive.
- Functional Medicine
The pillar this problem sits in at Functional Restoration Institute.
- Thyroid Dysfunction in this city
Thyroid trouble is not one feeling. A slow pace can leave you cold, heavy, and constipated. A fast pace can leave you.
- Sleep & Insomnia in this city
Sleep problems have a clock, a chemistry, and often a body part that hurts. Caffeine, a late bedtime, a cortisol curve, thyroid.
- Mold Toxicity in this city
Some people feel worse after months in a water-damaged building: fatigue, fog, sinus congestion, or a taste of must in the air..
- Brain Fog in this city
Losing a word, rereading the same sentence, or feeling mentally padded is an experience, not a disease name. Sleep, thyroid pace, glucose.
- Advanced Bloodwork
Advanced bloodwork goes past a bare metabolic panel when the question needs more context. Lipids in more detail, glucose with insulin, iron.
