Depression: Symptoms, Causes, and Evidence-Based Treatment
What is depression?
Depression, often called major depressive disorder, is more than feeling sad for a few days. It is a recognised medical condition in which low mood or a loss of interest in life persists for at least two weeks and begins to affect how a person functions at home, at work, or in their studies.
It can change the way a person thinks, sleeps, eats, and relates to others. It frequently occurs alongside anxiety, alongside long-term physical illnesses such as diabetes or heart disease, and sometimes alongside alcohol or substance use.
To put the scale in perspective: India’s National Mental Health Survey, conducted by NIMHANS across twelve states, found that around one in twenty Indians experiences depression at some point in their lives. The same survey revealed a wide treatment gap — only a minority of people who need mental health care actually receive it, often because of stigma, low awareness, or limited access to services. If you are seeking help, you are already doing something many people find very hard to do.
How depression affects daily life
Depression often shows up as a kind of quiet shrinking. A person may still go to the office, attend college, or run the household — but everything feels heavier and slower, as though they are moving through water.
Common day-to-day signs include:
Reduced energy, where simple tasks take far longer, and small mistakes creep in. Slower thinking, difficulty making decisions, and constant self-doubt. A sense of emotional numbness, irritability, or feeling like you’re performing normally on the outside while feeling empty inside. Changes in sleep — lying awake, waking far too early, or sleeping a great deal yet never feeling rested. Changes in appetite, eating very little or eating for comfort. A pulling away from people: avoiding conversations, losing interest in things once enjoyed, and feeling easily wounded by small remarks.
In many Indian families, this is misread as laziness, as “having everything and still complaining,” or as simple stress. That misunderstanding is one of the biggest reasons people delay getting help — and it is exactly the belief this guide hopes to gently correct.
Why Indian patients arrive at the wrong door
This is worth its own section, because it explains a lot of wasted years.
In India, anxiety very often presents as a body complaint before it presents as an emotional one. Palpitations. Chest heaviness. Burning in the stomach. Headache. Giddiness. Breathlessness. A feeling of something stuck in the throat. Weakness, tingling, back pain, a body that simply will not settle.
So people go to a physician, a cardiologist, a gastroenterologist. Investigations happen. Everything is normal. The patient is told, kindly or not so kindly, that there is nothing wrong — which they hear as you are making this up — and they go home with the symptoms and now some shame on top.
Then the cycle: symptom, fear, another test, temporary relief, symptom returns. I have seen folders with four ECGs from four different hospitals in one year.
None of this is anybody’s stupidity. It is what happens when a condition speaks in the language of the body and everybody is listening for the language of the mind. If you are reading this with a folder of normal reports — you are not a difficult patient. You have been in the wrong queue.
Things that are not anxiety but look exactly like it
Before anyone concludes that this is a psychiatric problem, some ordinary medical causes deserve to be ruled out. Any of these can produce a near-perfect imitation of an anxiety disorder:
- Thyroid overactivity
- Anaemia — common, and commonly missed, particularly in women
- Heart rhythm disturbances
- Low blood sugar, including in people on diabetes treatment
- Withdrawal from alcohol or sedatives
- Some prescribed medicines, including certain asthma inhalers, steroids and decongestants
- Vitamin B12 deficiency
A basic set of investigations at the start is not the psychiatrist being over-cautious. It is the psychiatrist being a doctor. If somebody diagnoses you with anxiety in five minutes without ever examining you or looking at a blood test, get a second opinion.
The main forms anxiety takes
These overlap, and most people have features of more than one.
Generalised anxiety disorder. Worry that has no single subject and never runs out. Money, children, health, the future, whether that message sounded rude. It moves from topic to topic. People describe a background hum of dread and a body that never fully relaxes. Sleep goes. Muscles ache from being tensed all day.
Panic disorder. Sudden, ferocious attacks — pounding heart, breathlessness, sweating, shaking, a terrifying conviction of impending death — usually peaking within minutes. The attack passes. What often does not pass is the fear of the next one, and that fear starts shrinking the person’s world.
Social anxiety disorder. Not shyness. An intense fear of being watched and judged, so strong that people avoid meetings, phone calls, weddings, classrooms, eating in front of others. It is routinely missed in India because we call it sharam or a quiet nature, and quiet natures are approved of. Meanwhile someone is turning down a career.
Specific phobias. Intense fear of one thing — heights, needles, dogs, lifts, flying, examinations. Common, often manageable by avoidance, until the avoided thing becomes unavoidable.
Agoraphobia. Fear of situations where escape or help would be difficult — crowds, buses, queues, being far from home. Frequently follows panic attacks. This is the one that ends with people not leaving the house, and families being told the person has “become lazy”.
Illness anxiety. Persistent fear of having a serious disease, kept alive by repeated checking, searching symptoms online, and seeking reassurance from doctors that lasts a few days at most.
A technical note, because you will see it elsewhere: obsessive compulsive disorder and post-traumatic stress disorder used to be grouped with the anxiety disorders. In current classification systems they sit in their own categories. Anxiety is central to both, but they behave differently and are treated differently, which is why they have their own pages here.
Why it happens
There is no single cause, and anyone who offers you one is simplifying to sell something.
It runs in families. Not as destiny — as a loading of the dice. An anxious temperament is often visible in childhood, long before any illness.
Temperament. Some people are simply built more alert. That same trait makes excellent doctors, planners and mothers. It is not a defect; it is a setting that can be turned up too far.
Stress that does not end. Not one dramatic event — the accumulation. A job that never lets go, a debt, a sick parent, a marriage being held together with effort, exam pressure carried for years.
Substances. This is under-recognised, and I say this as someone who spends half his practice in de-addiction. Alcohol reliably worsens anxiety — it settles you at night and hands you back a raw, jittery, anxious morning, so you drink again. Cannabis triggers anxiety and panic in a great many people, whatever anybody tells you. Tobacco withdrawal between cigarettes feels exactly like anxiety. And caffeine — five or six teas, coffee, energy drinks, headache pills that contain caffeine — is a genuinely common and completely reversible cause that almost nobody thinks about.
Medical conditions. Which brings me to the next section, and it is important.
Things that are not anxiety but look exactly like it
Before anyone concludes that this is a psychiatric problem, some ordinary medical causes deserve to be ruled out. Any of these can produce a near-perfect imitation of an anxiety disorder:
- Thyroid overactivity
- Anaemia — common, and commonly missed, particularly in women
- Heart rhythm disturbances
- Low blood sugar, including in people on diabetes treatment
- Withdrawal from alcohol or sedatives
- Some prescribed medicines, including certain asthma inhalers, steroids and decongestants
- Vitamin B12 deficiency
A basic set of investigations at the start is not the psychiatrist being over-cautious. It is the psychiatrist being a doctor. If somebody diagnoses you with anxiety in five minutes without ever examining you or looking at a blood test, get a second opinion.
A story from the consulting room
The following is a composite — assembled from patterns I have seen many times. It is not any one patient, and all details have been changed.
A man in his mid-thirties, working in a manufacturing unit outside Nashik, first came to me eleven months after his first panic attack.
It had happened on the highway. He pulled over convinced he was having a heart attack, and his brother drove him to a hospital where they admitted him overnight and found nothing. Over the following months: two more admissions, four ECGs, an angiography his family arranged privately because they did not believe the first results.
By the time he reached my room he had stopped driving. Then stopped taking the highway even as a passenger. Then stopped going to the factory on days when his chest felt tight, which was most days. His wife had started managing all outside work. His father had begun telling relatives that the boy had become weak-hearted.
He said one thing in the first consultation that I have heard from dozens of people since: “I am not afraid of dying, doctor. I am afraid of it happening in front of everybody.”
The diagnosis was panic disorder with developing agoraphobia. Nothing exotic. Nothing that eleven months and one lakh of investigations should have been required to find.
What changed things was not complicated. It was understanding what a panic attack physically is, therapy that worked directly on the avoidance, treatment for the underlying anxiety, and — this took the longest — a family conversation in which his father heard from a doctor that his son was ill, not weak.
He drives again. Not because he stopped being frightened, but because he stopped organising his life around the fright.
What actually helps
Talking therapy has the strongest evidence in anxiety disorders, full stop. Cognitive behavioural therapy in particular. It is not “counselling” in the sense of someone sympathising with you for an hour. It is structured work: identifying the thought patterns that keep the alarm ringing, and then — the part that does the heavy lifting — gradually, deliberately going back into what you have been avoiding, in steps you can manage.
Avoidance is the engine of every anxiety disorder. Each time you avoid something, the relief is instant and the fear grows. Therapy runs that engine backwards. Nothing else does it as well.
Medication. Several classes of medication are effective in anxiety disorders, and for moderate to severe anxiety the usual approach is therapy plus medication rather than either alone.
Two honest things about it.
First, the medicines that treat the underlying anxiety are not instant. They take a few weeks to build up, and some people feel slightly worse in the first week or two before they feel better. If nobody warns you about that, you will stop on day five and conclude it did not work. Most “treatment failures” I see are actually treatment abandoned too early.
Second — and I want to be blunt here, because this is my other specialty — there is a class of fast-acting sedatives that stop anxiety within about twenty minutes and cause dependence. They have real, legitimate short-term uses. But they are massively overprescribed in this country, freely available across chemists’ counters, and I have treated a great many people whose original problem was ordinary anxiety and whose current problem is a dependence that took years to build and months to unwind.
If a tablet reliably takes your anxiety away in half an hour, that is not a sign it is the right treatment. That is a sign it needs a proper conversation with a psychiatrist about how long you will be on it.
Specific medicines, doses and durations are decisions for a doctor who has examined you. I will not name them here and you should be sceptical of any website that does.
The unglamorous things, which matter more than people expect. Regular sleep — anxiety and poor sleep feed each other in a loop that has to be broken somewhere. Cutting caffeine down; try it for two weeks before deciding it makes no difference. Stopping alcohol as an anxiety treatment, which it convincingly pretends to be. Physical exercise, where the evidence is genuinely reasonable. Slow breathing, particularly a longer breath out than in — simple, free, and effective in the moment.
None of this replaces treatment. All of it makes treatment work better.
What does not help
“Just relax.” Nobody has ever recovered from an anxiety disorder because a relative told them to stop thinking so much.
More tests. The fifth ECG will also be normal. Reassurance from investigations lasts about three days and then the doubt returns, slightly stronger. Repeated testing is not neutral — it feeds the illness.
Avoiding the frightening thing. The most natural response, and the one that reliably makes it worse.
Self-medicating. Alcohol, cannabis, a sedative from a friend’s prescription, a strip from the chemist without a doctor. Each works for a night and costs more than it gives.
Waiting for it to pass on its own. Some anxiety does. Anxiety disorders, generally, do not — they consolidate. The man in the story lost eleven months. I meet people who have lost fifteen years.
How long does treatment take?
Honestly: weeks to begin to feel a difference, months to feel properly well, and often a period of continuing treatment after you feel well in order to stay well.
Stopping the moment you feel better is the single commonest reason anxiety returns. Feeling well on treatment means the treatment is working — not that it is no longer needed. When and how to stop is a conversation with your doctor, and it is planned, not sudden.
What to do this week
If you recognise yourself in this page, four practical things:
- Get the basics checked— thyroid, haemoglobin, blood sugar, B12. Rule out the imitators.
- Cut caffeine sharply for two weeks.Free, and occasionally startling in its effect.
- Stop using alcohol to manage it,if you are. It is making the mornings worse.
- Name one thing you have stopped doingbecause of anxiety — and treat getting it back as the actual goal of treatment. Not “feeling calm”. Getting the thing back.
Then see a doctor. A psychiatrist if you can, your family physician if that is easier to start with. Take your folder of normal reports. They are useful — they have already ruled things out.
If it is somebody in your family
Three things, and the third is the one that changes outcomes.
Believe the symptoms. The chest pain is real. Telling somebody their suffering is imaginary adds shame to fear and buys you nothing.
Stop being the safe person. If you accompany them everywhere so that they can cope, you are kindly holding the illness in place. Support the treatment, not the avoidance. This feels cruel and is not.
Do not let “weak” enter the family vocabulary. Once a household decides someone has become weak-hearted, that verdict follows them for years. It is wrong, it delays treatment, and in my experience the family’s language about the illness matters nearly as much as the prescription.
Frequently Asked Questions
Is anxiety a lifelong illness?
For most people, no. Many recover fully. Some have a recurring pattern managed the way one manages any recurring condition — with treatment when it flares and knowledge of one’s own early signs.
Will medication change my personality?
No. Treatment for anxiety is meant to give you back the ability to be yourself. If a medicine leaves you feeling flat or dulled, that is a reason to tell your doctor and adjust it, not a reason to accept it silently.
Can I be treated without medication?
Often, yes — particularly in mild to moderate anxiety, where therapy alone can be enough. It is a reasonable thing to ask your psychiatrist for.
Can a panic attack kill me?
No. It feels precisely like it can, which is what makes it so terrifying. It cannot.
Do I have to tell my employer or my family?
No. That is your decision entirely, and it is worth thinking about carefully rather than in a crisis.
Sources
- Indian Psychiatric Society — Clinical Practice Guidelines
- National Mental Health Survey of India, 2015–16 (NIMHANS, Ministry of Health and Family Welfare)
- World Health Organization — mhGAP Intervention Guide
- ICD-11 and DSM-5-TR classification of anxiety and fear-related disorders