Which Doctor Should I See? A Guide to 22 Common Health Conditions

Health navigation · Reference guide
Knowing which doctor to see is a skill, and almost nobody is taught it. Most people either wait too long, or go straight to the wrong specialist and lose weeks. This guide is a plain map of 22 common conditions: who to see first, which specialist handles it, when to escalate, and the signs that mean stop reading and go to hospital.

We are a coaching team, not a medical practice, and this guide does not diagnose anything or replace your doctor. We publish it because we watch it happen constantly. Someone spends a year managing a symptom on their own, or pays for the wrong consultation, simply because the system is confusing from the outside. A clear map is worth a great deal, and this one costs nothing.

How to use this guide well

Start general

A General Physician is the right first stop for almost everything here. They diagnose, treat, and refer you onward correctly.

Know the red flags

A small number of symptoms mean emergency care now, not an appointment next week. Those are listed first, on purpose.

And the third: bring your data. Old reports, current medicines, and a written list of symptoms with dates. A ten-minute consultation becomes far more useful when the doctor is not starting from nothing.

In this guide

1. Red flags: go to hospital now
2. The four levels of urgency
3. Why you start with a General Physician
4. Heart and circulation
5. Hormones and metabolism
6. Digestion and liver
7. Kidneys and lungs
8. Brain and nerves
9. Bones, joints, and sport
10. Skin, hair, and blood
11. Mental health and sleep
12. Women's health and men's health
13. Where daily habits genuinely help
14. Frequently asked questions
15. About the coach

Red Flags: Go to Hospital Now

Everything else in this guide can wait for an appointment. These cannot. If any of the following is happening, stop reading and get emergency care. In India, the national emergency number is 112, and 108 reaches an ambulance in most states.

Call an ambulance or go to emergency

• Chest pain with sweating, or collapse. Especially crushing or heavy pain, or pain spreading to the arm or jaw.
• Stroke signs. Remember FAST: Face drooping, Arm weakness, Speech difficulty, Time to call for help immediately.
• Severe breathlessness, or blue lips. At rest, or coming on quickly.
• The sudden worst headache of your life. Reaching full intensity within seconds or minutes.
• Vomiting blood, or black tarry stools. This is bleeding, and it is urgent.
• Blood pressure above 180/120 with symptoms. Chest pain, breathlessness, vision change, or confusion.
• No urine output, with severe swelling.
• Jaundice. Yellowing of the eyes or skin.
• Fever with a hot, swollen joint. A joint infection is a genuine emergency.
• Rapidly spreading skin infection. Red, hot, expanding, often with fever.
• Fainting, or chest pain, with known anaemia.
• Thoughts of ending your life. This is an emergency, and help exists. Call 112, go to a hospital, or tell one person you trust right now.

When in doubt, go. Nobody has ever regretted an emergency visit that turned out to be nothing. The cost of one unnecessary trip is small. The cost of one missed heart attack or stroke is not. If you are debating whether it is serious enough, treat that debate itself as your answer.

The Four Levels of Urgency

Most confusion is not about which doctor. It is about how fast. This is a simple scale you can apply to almost any symptom.

Level	What it means	Act within
Emergency	Life or organ is at risk right now	Immediately, call 112
Urgent	Serious, but stable enough to travel to a clinic	24 to 48 hours
Soon	Needs proper assessment, not a wait-and-see	1 to 2 weeks
Routine	Ongoing management or a scheduled review	Book a normal appointment

Why You Start With a General Physician

It is tempting to skip ahead and book the specialist directly. It usually costs you more, not less.

A General Physician does three things a specialist cannot do as well. They look at the whole picture rather than one organ. They order the first round of tests that decide which specialist you actually need. And they treat the large share of conditions that never require a specialist at all. Going straight to a cardiologist for fatigue can mean an expensive workup for a thyroid problem that a simple blood test would have found.

01Before the appointment

Write it down

List your symptoms, when each one started, what makes it better or worse, and every medicine and supplement you take with its dose. Memory fails in a consultation room. Paper does not.

02During the appointment

Ask the three questions

What do you think this is? What are we ruling out? What should make me come back sooner? The third question is the one most people forget, and it is the one that keeps you safe between visits.

03After the appointment

Keep your own records

Ask for copies of every report and keep them in one place, ideally dated and in order. Your own file is often the only complete record of your health that exists anywhere.

Heart and Circulation

Condition	Common symptoms	See first	Specialist	Refer when
High blood pressure	Often none. Sometimes headache or dizziness	General Physician	Cardiologist	Persistently 140/90 or above, or hard to control
Coronary artery disease	Chest pain or breathlessness on exertion	General Physician	Cardiologist	Any chest discomfort brought on by effort
Heart failure	Breathlessness, swollen legs	General Physician	Cardiologist	Swelling, or falling exercise tolerance
High Lipoprotein(a)	Usually none at all	General Physician	Preventive Cardiologist	Family history of early heart disease

Common tests include blood pressure monitoring, ECG, echocardiogram, a stress test, CT angiography, and blood markers such as troponin, BNP, Lp(a), and ApoB. Treatment ranges from lifestyle change alone to medication, stenting, or surgery.

The quiet ones matter most. High blood pressure and raised Lipoprotein(a) usually cause no symptoms whatsoever. They are found by testing, not by feeling unwell. This is the entire argument for a routine panel even when you feel fine.

Hormones and Metabolism

Condition	Common symptoms	See first	Specialist	Refer when
Type 2 diabetes	Increased thirst and urination, fatigue	General Physician	Endocrinologist	HbA1c of 6.5% or above, or difficult control
Hypothyroidism	Fatigue, weight gain, feeling cold	General Physician	Endocrinologist	Abnormal thyroid tests

Tests are straightforward: HbA1c and glucose for diabetes, sometimes continuous glucose monitoring, and TSH with free T4 for thyroid. Both conditions respond well to treatment, and diabetes in particular responds strongly to structured food and training alongside medication.

Digestion and Liver

Condition	Common symptoms	See first	Specialist	Refer when
Acid reflux (GERD)	Heartburn, acid taste	General Physician	Gastroenterologist	Symptoms lasting more than four weeks
Fatty liver (NAFLD)	Often none	General Physician	Hepatologist	Raised liver enzymes on a blood test

Reflux is assessed by endoscopy when it persists. Fatty liver is picked up on liver enzymes and ultrasound, with FibroScan used to assess scarring. Fatty liver is one of the clearest examples in this whole guide of a condition where sustained weight loss and training change the outcome directly.

Kidneys and Lungs

Condition	Common symptoms	See first	Specialist	Refer when
Chronic kidney disease	Swelling, fatigue	General Physician	Nephrologist	Reduced kidney function on testing
Asthma	Wheezing, cough, breathlessness	General Physician	Pulmonologist	Frequent attacks despite treatment

Kidney function is measured with creatinine, eGFR, and urine tests. Asthma is confirmed with spirometry and managed with inhalers. With asthma, exercise is usually encouraged rather than avoided, once control is good.

Kidney disease changes the rules. Diet advice that is excellent for most people, including high protein and generous potassium, may be wrong in reduced kidney function. If your kidneys are affected, nutrition must be physician-guided. Please do not take general fitness advice, including ours, over your nephrologist's.

Brain and Nerves

Condition	Common symptoms	See first	Specialist	Refer when
Stroke	Weakness, slurred speech, facial droop	Emergency, immediately	Neurologist	There is no waiting. Time is brain tissue
Migraine	Severe, often one-sided headache	General Physician	Neurologist	Frequent or disabling headaches

Stroke is diagnosed by CT or MRI and treated with clot-busting therapy within a narrow time window, followed by rehabilitation. This is why FAST matters so much: the treatment works, but only if you arrive early enough for it.

Bones, Joints, and Sport

Condition	Common symptoms	See first	Specialist	Refer when
Knee osteoarthritis	Knee pain, stiffness	General Physician	Orthopaedic Surgeon	Pain persisting beyond six weeks
Tendinopathy	Local tendon pain with load	Sports Medicine Physician	Sports Medicine Specialist	Pain persisting despite rest
Rheumatoid arthritis	Swollen joints, morning stiffness	General Physician	Rheumatologist	Morning stiffness lasting over an hour

These three get confused with one another constantly, and the treatments pull in opposite directions. Osteoarthritis is wear-related and improves with low-impact loading and weight management. Tendinopathy improves with progressive loading, not rest, which surprises most people. Rheumatoid arthritis is autoimmune and needs disease-modifying medication early to protect the joints.

A useful distinction

• Stiff for a few minutes in the morning, worse after activity. Points towards osteoarthritis.
• Stiff for more than an hour in the morning, with swelling in several joints. Points towards an inflammatory cause. Get it assessed rather than managed at the gym.
• Sharp, localised pain at a tendon that warms up with activity and hurts the next day. Points towards tendinopathy, and it usually needs loading, not rest.

Skin, Hair, and Blood

Condition	Common symptoms	See first	Specialist	Refer when
Acne	Persistent pimples	General Physician	Dermatologist	Moderate to severe, or scarring
Hair loss	Thinning hair	General Physician	Dermatologist	Progressive loss
Iron deficiency anaemia	Fatigue, breathlessness, pallor	General Physician	Haematologist	Low haemoglobin on testing
Breast cancer	A lump, or a change in the breast	General Physician	Surgical Oncologist	Any persistent lump. Do not wait

Hair loss is worth a blood test before a product, because ferritin, thyroid, and vitamin D all show up as causes. Anaemia deserves one extra step that people often skip: the important question is not only how to raise your iron, but why it fell in the first place, which is why a gastroenterology referral sometimes follows.

On lumps. Most breast lumps are not cancer. That is true, and it is also not a reason to wait. Any persistent lump gets examined, and imaging or a biopsy decides the answer. Early detection changes outcomes more than almost any other single factor in this guide.

Mental Health and Sleep

Condition	Common symptoms	See first	Specialist	Refer when
Depression	Low mood, loss of interest, fatigue	General Physician	Psychiatrist	Symptoms lasting more than two weeks
Obstructive sleep apnoea	Loud snoring, daytime sleepiness	General Physician	Sleep Medicine Specialist	Snoring with persistent fatigue

Both are common, both are treatable, and both are widely dismissed as personality or as simply being busy. Sleep apnoea is confirmed by a sleep study and treated effectively with CPAP, often alongside weight loss. Depression responds to therapy, to medication, and to structured exercise, and the strongest results usually come from combining them rather than choosing between them.

Exercise is a real treatment, and it is not the whole treatment. Training genuinely helps mood, and we see it every month. It does not replace a psychiatrist, and no coach should imply that it does. If you are struggling, please see a doctor, and keep training alongside that care rather than instead of it.

Women's Health and Men's Health

Condition	Common symptoms	See first	Specialist	Refer when
PCOS	Irregular periods, acne, hair changes	General Physician	Gynaecologist or Endocrinologist	Persistent menstrual irregularity
Low testosterone	Low libido, fatigue, low mood	General Physician	Endocrinologist or Andrologist	Low levels on testing, with symptoms

PCOS is assessed with ultrasound and hormone testing, and it is one of the conditions where structured training and a higher-protein, higher-fibre way of eating make a substantial difference alongside medical care.

Two conditions with a marketing problem. Both PCOS and low testosterone are surrounded by supplements and clinics selling a shortcut. Both need proper testing first, because symptoms alone do not confirm either, and because low testosterone in particular can be a signal of something else that matters more. Get the diagnosis before you get the treatment.

Where Daily Habits Genuinely Help

This is the honest part, and it is where a fitness company should be most careful. Training and food are powerful for some conditions, supportive for others, and beside the point for a few. Pretending otherwise is how people end up delaying care that would have worked.

Condition	How much habits help	Exercise guidance	Nutrition focus
High blood pressure	Substantial	Yes, once medically stable	Reduce sodium, DASH-style eating
Type 2 diabetes	Substantial	Strongly recommended	High fibre, adequate protein
Fatty liver	Substantial	Highly recommended	Mediterranean-style eating
Sleep apnoea	Substantial	Highly recommended	Weight management
PCOS	Substantial	Highly recommended	High protein, high fibre
Knee osteoarthritis	Substantial	Low-impact loading	Weight management
Tendinopathy	Substantial	Progressive loading, not rest	Adequate protein
Depression	Substantial, alongside care	Strongly encouraged	Balanced, regular meals
Acid reflux	Substantial	Avoid hard training right after meals	Identify your trigger foods
Iron deficiency anaemia	Substantial, once treated	Reduce intensity while severe	Iron-rich foods, treat the cause
Coronary artery disease	Meaningful	Cardiac rehabilitation	Mediterranean-style eating
Asthma	Meaningful	Usually encouraged	Healthy weight
Low testosterone	Meaningful	Resistance training	Adequate protein and healthy fats
Migraine	Meaningful	Regular, consistent exercise	Hydration, regular meals
Hair loss	Partial	No restriction	Protein and iron
Heart failure	Partial, supervised only	Supervised programmes only	Low sodium
Chronic kidney disease	Partial, physician-guided	Physician-guided	Kidney-appropriate diet
Hypothyroidism	Partial	As tolerated	Balanced diet
Rheumatoid arthritis	Partial, supportive	Maintain mobility	Anti-inflammatory pattern
Breast cancer	Supportive only	With oncology guidance	Adequate protein

Read the bottom of that table carefully. For heart failure, kidney disease, and cancer, habits support treatment. They do not replace it, and unsupervised training can cause harm. If a coach tells you otherwise, walk away. Our own rule is simple: your doctor leads, and we work behind them.

What this means for how we coach

We coach from bloodwork, body composition, and recovery data, and we work with guests who arrive with several of the conditions on this page. What we do not do is treat them. We ask for your reports, we ask who your doctor is, and we build the training and the food around their instructions. Where a condition sits in the lower half of that table, we ask for written clearance before you train with us.

That is not caution for its own sake. It is the same principle behind everything else we publish. If a result cannot be measured and checked by someone independent of us, it is not a result. And if a condition needs a doctor, it needs a doctor.

Wondering what to test before you start anything? Read the blood tests worth taking before a transformation on our blog, or see how a residential programme is structured and measured.

Frequently Asked Questions

Which doctor should I see first for most health problems?

A General Physician. They assess the whole picture, order the first round of tests, treat the many conditions that never need a specialist, and refer you to the right specialist when one is needed. Going straight to a specialist often costs more time and money, because the wrong specialist cannot rule out the right diagnosis.

Can I book a specialist directly without a referral?

In India you usually can, in the private system. Whether you should is a different question. It works well when you already know the diagnosis, for example an established cardiac patient seeing their cardiologist. It works poorly for a new, undefined symptom such as fatigue, which can come from the thyroid, the blood, the heart, sleep, or mood.

What symptoms mean I should go to emergency instead of booking an appointment?

Chest pain with sweating or collapse, stroke signs using the FAST check, severe breathlessness or blue lips, the sudden worst headache of your life, vomiting blood or black stools, jaundice, a fever with a hot swollen joint, no urine output with severe swelling, or thoughts of ending your life. In India, call 112, or 108 for an ambulance in most states.

How long should I wait before seeing a doctor about a symptom?

Use the four-level scale in this guide. Emergency means now. Urgent means within 24 to 48 hours. Anything persistent, such as reflux beyond four weeks or joint pain beyond six weeks, means an appointment within one to two weeks rather than continued waiting. A lump of any kind is never a wait-and-see.

Can exercise and diet replace medication for these conditions?

For some conditions, structured habits are genuinely powerful, and in conditions such as fatty liver, type 2 diabetes, and sleep apnoea, they change the outcome directly. For others, including heart failure, kidney disease, and cancer, they support treatment and cannot replace it. Any decision to change medication belongs to your doctor, never to a coach.

What should I bring to a doctor's appointment?

A written list of your symptoms with the date each one started, every medicine and supplement you take with its dose, and all previous reports in date order. Ask three questions before you leave: what do you think this is, what are we ruling out, and what should make me come back sooner.

Is a fitness programme safe if I already have a diagnosed condition?

Often yes, and frequently it is one of the most useful things you can do, but it depends entirely on the condition and on your doctor's view. We ask guests with a diagnosed condition to bring their reports and, where relevant, written clearance from their doctor, so that the training and the meals are built around their medical care rather than around a generic plan.

About the Coach

Niraj Kumar Borah

Founder and head coach of Fitness Bootcamp, a premium residential health transformation programme based in Rishikesh. Since 2020 he has guided more than 4,600 guests through structured, fully supported transformations.

His coaching is biomarker-driven, built from bloodwork, body composition, and recovery data. He is a coach and not a doctor, which is exactly why this guide exists: knowing where coaching ends is part of doing it properly.

Verifiable credentials

• HYROX: HYROX Academy Level 1 certified, Creating Athletes, affiliated Performance Coach. Directory listing.
• Nutrition: Precision Nutrition Level 1.
• Conditioning and running: Bioforce Conditioning Coach, VDOT Certified Running Coach.
• Heart rate: NESTA Certified Heart Rate Performance Specialist.

Have your reports, and no plan around them?

Bring your bloodwork and your doctor's guidance. We will tell you honestly whether a residential programme is the right next step, or whether it is not.

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This guide is general educational information about how to navigate healthcare. It is not medical advice, it does not diagnose any condition, and it is not a substitute for assessment by a qualified doctor. Symptoms overlap, and the same symptom can have very different causes in different people. Referral pathways, test availability, and emergency numbers vary by region and can change. If you are unwell, please see a doctor. If you may be facing an emergency, call 112 or go to your nearest hospital immediately.