From controlling body temperature and flushing out toxins, adequate hydration plays a vital role in our general health and well-being, water is a life essential. However, while dehydration garners significant attention, overhydration, or drinking excessive amounts of water, is a condition that can have serious and sometimes fatal consequences.

Although it may sound bizarre since drinking water is said to be the solution for most health related problems it is important to recognize how much water is considered "too much" or the risks involved with being overhydrated can maintain a healthy balance.

What Is Water Intoxication?

Water intoxication, also termed hyperhydration, water poisoning or water toxemia, develops when an individual drinks much more water than the kidney can excrete. The main function of the kidneys in the human body is the processing and excretion of excess water. However, the human kidneys can process only up to 0.8 to 1.0 liters of water at a time. Drinking an amount that exceeds this may overwhelm the kidneys and put the electrolyte balance out of sync in the human body.

Electrolytes, especially sodium, are essential in maintaining fluid balance within and outside cells. Hyponatremia is the condition when sodium levels fall below 135 mmol/L, resulting from excessive water intake. This causes water to shift into cells, swelling them. In the brain, this can cause severe complications, including coma or even death.

Symptoms of Water Intoxication

The symptoms of water intoxication vary from mild to severe. Early symptoms are often similar to dehydration, which makes self-diagnosis challenging. Common symptoms include:

• Headaches
• Nausea and vomiting
• Muscle cramps or weakness
• Fatigue or drowsiness
• Confusion and disorientation

In more serious cases, water intoxication can cause seizures, loss of consciousness, or swelling in the brain. These complications can be fatal if left untreated.

A notable case occurred in 2007 when a woman participating in a water-drinking contest tragically died after consuming nearly two gallons of water in under two hours. More recently, actress Brooke Shields experienced a grand mal seizure attributed to excessive water consumption.

Causes of Water Intoxication

Water intoxication is rare, but certain scenarios can increase the risk:

1. Sporting Events and Endurance Training

These endurance athletes are prone to water intoxication, especially if they drink large amounts of water without replacing lost electrolytes. Hyponatremia usually happens during long races or marathons as individuals mistake fatigue and muscle cramps for dehydration and continue drinking water in excess.

2. Military Training

Overhydration among military personnel is usually due to severe physical activity in extreme environmental conditions. The total number of hyponatremia cases documented from 2007 through 2022 for the active duty in the United States exceeds 1,600, with a note to this problem on exertion-related overhydration.

3. Mental Health Conditions

Compulsive water drinking, known as psychogenic polydipsia, is linked with some mental illnesses such as schizophrenia and psychosis. People with these conditions tend to drink too much water, causing a hazardous electrolyte imbalance.

4. Drug Abuse

Drugs such as MDMA (ecstasy) raise the body temperature and make people thirsty, and at times, some people tend to drink excess water at events like music festivals. MDMA also leads to urine retention, thus exacerbating the dangers of water intoxication.

How Much Water Is Too Much?

The exact amount of water that causes intoxication varies from one person to another. However, drinking more than 1 liter of water per hour for several hours raises the risk. For healthy individuals, the risk of overhydration is low unless taking part in extreme physical activity or ignoring thirst cues.

Certain medical conditions, such as kidney or liver disorders, can impair the body's ability to process fluids, and even moderate water intake may be harmful. Similarly, certain medications, such as diuretics and antipsychotics, can affect the perception of thirst or fluid regulation.

How Much Water Is Enough?

The widely touted recommendation of eight 8-ounce glasses of water per day has little basis in fact. According to the National Academy of Medicine, a daily total fluid intake is about 15 cups (3.7 liters) for males and 11 cups (2.7 liters) for females, from beverage sources and from food. Usually, about 20 percent of daily hydration comes from foods such as fruits and vegetables.

A better rule of thumb is to listen to your body and drink water based on thirst. Use the color of your urine as an indicator:

• Light yellow urine indicates proper hydration.
• Dark yellow urine may indicate dehydration.

Older adults, whose thirst mechanisms may decline with age, should be proactive about maintaining hydration, especially during illness or hot weather.

Water Intoxication vs. Dehydration

The symptoms of water intoxication—such as headaches, fatigue, and muscle weakness—are similar to those of dehydration. If you are unsure which condition you are experiencing, seek medical attention immediately rather than self-treating with more water.

Preventing Water Intoxication

To avoid the dangers of overhydration:

• Drink water gradually throughout the day rather than consuming large amounts at once.
• Replace lost electrolytes post high-intensity exercise or heavy sweating.
• Consider using sports drinks or salty snacks to help replenish sodium.
• Keep track of fluid consumption during long-duration activities, and do not consume more water than the body is losing in terms of electrolytes.
• If on medications or have specific medical conditions, check with your doctor regarding the safety of drinking water.

For signs of severe water intoxication-including confusion, drowsiness, seizures, and loss of consciousness-customer is advised to seek medical assistance immediately. In the meanwhile, a salty snack would help to temporarily correct low sodium levels.

Hydration is important to health, but overhydration can be a serious risk; the secret is in finding a balance. Drink enough water to satisfy your body, but not so much that it overwhelms your system. Remember, water is life, but moderation keeps it that way.

Hyponatremia (low sodium level in the blood). National Kidney Foundation. 2023.

Water Toxicity. NIH. 2023

Exercise-Associated Hyponatremia: 2017 Update. Front Med (Lausanne). 2017

Update: Exertional Hyponatremia Among Active Component Members of the U.S. Armed Forces, 2007–2022

For most people, dengue is associated with high fever, severe body aches, headache, fatigue, and a temporary drop in platelet count. With proper care, the majority of patients recover completely within a couple of weeks. However, doctors caution that in rare instances, dengue can leave behind an unexpected complication that affects the nervous system rather than the blood—Guillain-Barre syndrome (GBS).

What Is Guillain-Barre Syndrome (GBS)?

GBS is an uncommon autoimmune disorder in which the body's immune system mistakenly attacks the peripheral nerves. It usually develops after an infection, and growing evidence suggests that dengue can be one of the infections capable of triggering this immune response. While the chances remain low, the condition can progress rapidly and requires prompt medical attention.

The condition affects the nerves and can cause increasing weakness in the legs, arms, face and swallowing.

Also read: Do People With Type 2 Diabetes Face A Higher Risk of Severe Dengue? New Review Says Yes

How Dengue Can Trigger GBS

Unlike the fever and body pain seen during active dengue infection, GBS often appears days or even weeks after the patient seems to be recovering. This delay can make it easy to overlook the connection.

Our immune system protects our body by fighting infections. In some rare cases an infection like dengue can trigger a strange immune response where our body mistakenly attacks its own nerves.

Nerves carry signals between our brain and the rest of our body allowing us to move and feel normally. When nerves get damaged it disrupts the signals from our brain leading to muscle weakness tingling and other symptoms.

Someone who has recently recovered from dengue may suddenly notice tingling in the feet or hands, weakness in the legs, difficulty climbing stairs, or an unsteady walk. As the condition progresses, the weakness may spread upwards, affecting the arms, facial muscles, swallowing, or even the muscles responsible for breathing.

The exact reason this happens is believed to be an abnormal immune response. Instead of switching off after fighting the dengue virus, the immune system mistakenly attacks the protective covering of the nerves, disrupting the signals between the brain and muscles. This results in the characteristic muscle weakness seen in GBS.

Guillain-Barre syndrome usually develops when we are recovering from dengue or even days to weeks after the fever has gone away.

Also read: India’s First Approved Dengue Vaccine: Takeda’s QDENGA Protects Against All Four Virus Serotypes

Warning Signs You Should Not Ignore

Feeling tired and fatigued is common, after dengue. Usually gets better slowly. However, we need to differentiate it from weakness. Neurological weakness means our muscle movements are affected.

It often starts in our legs. We may notice it is getting harder to climb stairs get up from a chair or walk normally. This weakness can sometimes spread to our arms and face. In cases it can even affect our swallowing or breathing which may require ICU and ventilator support.

Although dengue-related GBS is rare, recognising the warning signs early can make a significant difference. Timely diagnosis and treatment can help reduce complications and improve recovery.

Any person who develops new weakness, numbness, difficulty walking, facial drooping, trouble swallowing, or breathlessness in the weeks following dengue should seek immediate medical evaluation rather than assuming it is part of normal post-viral fatigue.

Also read: Will Waterborne Diseases Rise In The Future? New Study Says Climate Change Could Be A Major Driver

Why Early Recognition Matters

The reassuring news is that most people with dengue will never develop Guillain-Barre syndrome. Nevertheless, awareness remains important because the condition can become serious if left untreated.

Preventing mosquito bites, eliminating stagnant water around homes, and seeking medical care early for suspected dengue remain the best ways to reduce the risk of both the infection and its uncommon complications.

The main thing to remember this monsoon is simple: feeling tired after dengue's normal but if our weakness is getting worse we should not ignore it. Recognizing this difference. Getting medical help early can help us identify this rare but treatable complication on time.

As dengue cases rise during the monsoon, recovery should not simply be measured by the disappearance of fever. Paying attention to new neurological symptoms after the illness has resolved can help ensure that a rare but potentially life-threatening complication is recognised before it becomes an emergency.

By Dr. Abizer Manked, Consultant Physician and Diabetologist at Saifee Hospital, Mumbai and Dr. Arun Shah, Director Neurosciences, Sir HN Reliance Foundation Hospital, Mumbai

A small lump in the neck is easy to overlook. In many cases, such swellings are linked to minor infections and settle on their own. But not every neck lump is harmless. The neck houses numerous vital structures, including lymph nodes, glands, blood vessels, and nerves, all within a compact area.

As a result, a seemingly minor swelling can sometimes be an early sign of an underlying condition that requires timely medical attention.

Why Neck Lumps Often Go Unnoticed

The neck houses important organs and tissues, including the thyroid gland, lymph nodes, salivary glands, major blood vessels, and nerves.

This area can be deceptive for two reasons:

• We rarely examine our neck as closely as we do our face or hands, allowing lumps to grow unnoticed.
• The neck acts as a drainage pathway for infections affecting the throat, teeth, scalp, and nearby regions, making swollen lymph nodes relatively common.

Adding to the challenge, many serious neck conditions, including certain cancers may not cause pain in their early stages.

What Causes Most Neck Lumps?

It’s been observed that the majority of neck swellings are benign.

Common non-cancerous causes include:

Reactive lymph nodes: Often develop after a cold, sore throat, dental problem, or skin infection. They are usually tender and tend to resolve within a few weeks.

Thyroid nodules: Quite common in adults and often harmless. These lumps typically move when swallowing.

Cysts: Such as branchial cleft cysts or sebaceous cysts, which are generally smooth, rounded, and slow-growing.

Lipomas: Soft fatty growths that can move easily beneath the skin.

Tubercular lymph node enlargement: Still frequently seen in India, presenting as gradually enlarging, usually painless neck nodes.

Also read: 'X-Men' Star Tyler Mane Shares Male Breast Cancer Treatment Journey, Urges Men To Prioritize Health

Warning Signs That Need Medical Evaluation

While many neck lumps are harmless, certain features warrant a consultation with a doctor within one to two weeks:

• A lump that persists for more than three to four weeks
• Progressive enlargement over time
• A hard, irregular, or fixed swelling
• A painless lump that does not go away
• Swellings larger than 2.5 cm (about one inch)
• Lumps located above the collarbone

Associated symptoms such as unexplained weight loss, mouth ulcer, persistent fever, night sweats, hoarseness, difficulty swallowing, chronic cough, or unexplained ear pain

Individuals with a history of tobacco use, alcohol consumption, previous radiation exposure, HPV-related disease, or a family history of thyroid cancer or lymphoma should be especially vigilant.

Also read: R&B Singer Nivea Reveals Leukemia Diagnosis

How Doctors Investigate Neck Swellings

Early diagnosis is key to ensuring the most effective treatment.

Evaluation typically begins with a detailed clinical examination, as the location of the lump often provides important clues.

Common investigations include:

• Ultrasound, which helps determine whether a swelling is solid or fluid-filled
• Fine Needle Aspiration Cytology (FNAC), a simple outpatient procedure that collects cells for analysis
• Core or excision biopsy, when further tissue assessment is required
• CT or MRI scans, which help assess the extent of deeper lesions
• Blood tests, including thyroid function tests and other relevant investigations

When cancer is detected early, treatment is often less extensive and outcomes are significantly better.

Also read: Cervical Cancer Cases In India Drop 37% Over A Decade, Highlighting Impact Of Screening & HPV Vaccination

Delays That Can Lead to Problems

Several common mistakes contribute to delayed diagnosis:

• Repeated courses of antibiotics without proper follow-up
• Assuming a painless lump is harmless
• Self-treating with massages, heat applications, or home remedies
• Delaying specialist evaluation despite persistent swelling

Seeking expert assessment early can prevent complications and improve treatment options.

A Simple Monthly Neck Self-Check

A quick self-examination can help identify changes early.

1. Look in the mirror for any visible swelling.
2. Swallow water and observe whether any lump moves.
3. Gently feel beneath the jaw, along both sides of the neck, behind the ears, and above the collarbones.
4. Monitor any new lump for changes in size, firmness, or mobility.
5. Seek medical advice if a swelling persists, enlarges, or remains unexplained beyond a few weeks.

The Takeaway

A neck lump is often nothing more than a temporary response to infection or inflammation. However, some conditions, including cancers of the thyroid, lymph nodes, and head and neck region can present as painless swellings long before other symptoms appear.

The key is not to panic, but not to ignore it either. When it comes to neck swellings, early evaluation can make the difference between a straightforward treatment and a much more complex journey later on.

By Dr Akshay Kudpaje, HOD/Senior Consultant - Head & Neck Oncology at HCG Cancer Hospital, Hebbal, North Bangalore

For decades, melasma treatment began and ended with a tube of cream. The typical first treatment for those stubborn brown-grey patches on the forehead, upper lip and cheeks that are typically caused by sun exposure, hormones or pregnancy was once hydroquinone, retinoid and steroid combinations.

Patients would put some cream on for months, and get some improvement, and then when they stopped, the pigmentation would reappear. Today, these creams have still got a role but dermatology has come a long way and now, patients have so much more to work with, acting on the melasma from different angles at the same time.

The New Generation Of Topical Ingredients

There are more choices available within the realm of creams. Gentler brightening agents like thiamidol and 2-MNG have been developed to do the same job as hydroquinone, but they do it in a different way in the body.

Initial studies indicate that these ingredients can be as effective as older favourites, irritating less than older ingredients that are already doing their job of irritating sensitive skin prone to developing melasma in the first place.

Another compound, malassezin, has shown promising early results in that it has been found to inhibit the process of pigment production itself. Due to the chronic and relapsing nature of melasma, dermatologists are more inclined to use these less aggressive, but more tolerated long term maintenance treatments as opposed to short term treatments alone.

Also read: Secret To Glowing Skin: How Face Acids Can Revolutionize Your Skincare Routine

Laser & Light-Based Therapies

The most obvious change in how the skin is treated for melasma is the way of lasers and light-based treatments. A side advantage of the low-fluence picosecond lasers is that they break up excess pigment with very short, gentle energy pulses, meaning that there's less skin damage as a side effect, which is a drawback of older, more aggressive laser settings.

Fractional lasers are now also employed in conjunction with topical treatments to enhance drug delivery into the skin, essentially combining the two treatments. They are regarded as non-invasive technologies since they do not involve any incisions or extended downtime and most patients are able to return to their pre surgery routine within a day or two.

Newer-Generation Peels

Chemical Peels are also available in a re-optimized formulation for the skin that tends to melasma. Newer types of combination peels use lesser amounts of various active ingredients and less of a single strong acid, reducing the chances for additional pigmentation, which is a common worry in dark skin tones.

They are now more frequently prescribed with topicals and lasers as part of a multi-pronged approach, rather than as a treatment on their own, as they are done in a series of milder sessions.

Also read: Scientists Find Rare Contagious Skin Cancer In Fish From US, Canada: Should Humans Worry?

Microneedling & Regenerative Approaches Are The Two Options To Consider

The technology of microneedling has also come a long way. This once again basic but now formulated with serums and even exosome-based formulations is an area that calms inflammation and helps to regulate the pigments of the skin as it recovers.

This "angle" is called "regenerative" because newer treatments aren't just intended to lighten or fade existing skin melanin, but seek to address the skin's environment that is causing melasma to reappear.

Both Oral & Systemic Options Are Available

Non-invasive is more than just procedures performed in the clinic. In recent years, low doses of tranexamic acid taken orally under medical supervision has been added to the melasma tool box.

It is internally active, in that it slows blood flow in the blood vessels, which is now known to help trigger the production of pigment in the skin, and is therefore a valuable addition to the treatment of melasma, particularly when other topical treatments are not effective.

Also read: Could Skin Changes Signal More Than Just Pregnancy Glow? Expert Shares What Every Mom-to-Be Needs To Know

Why Combination Care Is the New Standard?

There's one thing that sets the tone for the ever-changing landscape of melasma treatment: there's no single answer. It is now known that melasma is a real multi-faceted skin problem that is influenced by multiple factors such as genetics, hormones, sun exposure, heat and inflammation.

Many dermatologists prefer to use a multi-layered approach to skin care for treatment, such as a topical therapy, an in-office procedure and, if applicable, oral skin care therapy, depending on the skin type and pigmentation of the patient. That's not only for quicker results, it also helps to reduce the likelihood of the skin darkening more after treatment, which is more common in patients with darker skin tones.

Today, instead of a one-and-done, dermatologists are more apt to craft a gradual approach that involves calming active pigmentation, then moving to a maintenance regimen that is lighter to avoid pigment re-flash.

“As it is a multi-factorial disease, using any one modality is always going to be limited and a multi-modal approach that combines topical, procedural and sometimes systemic treatment, is what is helping us achieve more lasting results and reduced relapse rates,” says Dr. Ajay Rana.

What Hasn't Changed

Despite such innovation, one thing is true: sun protection is a must. If they're going to hold up, it's going to be because of the broad-spectrum sunscreen and the consistent application of it, along with physical protection such as sun hats.

If not, the most sophisticated of the procedures will eventually be replaced by renewed pigmentation.

Patient Advisory: Key Points To Consider

Although it's a challenging condition to treat, melasma is not a quick fix. However, today there are more ways for patients to visibly improve, and even more of them are not invasive, and have less side effects than five years ago.

If you've used a cream before and stopped using it, it might be worth talking to a dermatologist again; the treatment options are quite different now.