Cold sores are a common and often frustrating skin issue. While they may look like harmless blisters, cold sores are actually caused by the herpes simplex virus (HSV).

What Causes Cold Sores?

Cold sores are caused by the herpes simplex virus (HSV), which comes in two types: HSV-1 and HSV-2.

HSV-1 is the primary cause of cold sores, usually appearing around the mouth.

HSV-2 generally causes genital herpes but can also lead to cold sores.

While the appearance of cold sores caused by both HSV-1 and HSV-2 can look similar, their locations tend to differ. However, it is possible for HSV-1 to cause sores on the genitals and for HSV-2 to appear on the mouth.

How Do Cold Sores Spread?

Cold sores are highly contagious and can spread easily. The virus can be passed on through:

• Kissing or skin contact
• Sharing food, drinks, or cosmetics (such as lip balm)
• Oral sex, which can spread both cold sores and genital herpes

Even when a cold sore isn’t visible, the virus can still be spread through close contact. This makes prevention and management key to reducing outbreaks and the risk of infecting others.

Once someone contracts HSV, it stays in the body for life. While the virus remains dormant most of the time, it can reactivate and cause new sores, especially during periods of:

• Stress
• Illness
• A weakened immune system

Unfortunately, there’s no cure for the herpes virus, but the symptoms can be managed.

Symptoms of Cold Sores

Cold sores don’t just appear out of nowhere. Before the sore is visible, you may notice a tingling or burning sensation around the lips or face, which can occur several days before the sore forms. This is the best time to begin treatment to shorten the outbreak.

When a cold sore does appear, it often looks like a red, raised blister filled with fluid. The blister can be painful to touch, and there may be more than one. Cold sores usually last around two weeks and are contagious until they crust over and heal.

The Five Stages of a Cold Sore

Cold sores go through distinct stages as they develop and heal:

• Tingling and itching: You may feel these symptoms about 24 hours before the blister appears.
• Blisters: Small, fluid-filled blisters form, typically around the mouth.
• Bursting: The blisters burst and form painful sores.
• Scabbing: The sores dry out, scab over, and may itch or crack.
• Healing: The scab falls off, and the cold sore heals.

Risk Factors for Cold Sores

Certain factors can trigger the reactivation of HSV, leading to cold sores. These include:

• Infection, fever, or cold
• Sun exposure
• Stress
• Menstruation
• Dental work or injury
• Weakened immune system due to conditions like HIV/AIDS, eczema, or chemotherapy

Managing and Treating Cold Sores

There’s no cure for cold sores, but several treatments can ease the symptoms and help manage outbreaks.

Topical Ointments and Creams

Over-the-counter antiviral creams like docosanol (Abreva) or prescription ointments like penciclovir (Denavir) can help reduce the duration of an outbreak, especially if applied at the first sign of a cold sore.

Oral Medications

Prescription antiviral medications like acyclovir, valacyclovir, and famciclovir can also help, particularly for people who have frequent or severe outbreaks. Your doctor may recommend taking these medications regularly to prevent future outbreaks.

Home Remedies

There are also some home remedies that may provide relief, such as:

• Applying ice or a cold washcloth to the sore
• Using aloe vera gel or lemon balm lip balms
• Applying petroleum jelly to ease discomfort

Canker Sores vs. Cold Sores: What's the Difference?

While cold sores and canker sores may seem similar, they are quite different:

Cold sores are caused by the herpes virus, appear around the mouth, and are contagious.

Canker sores are not contagious and appear as ulcers inside the mouth or throat.

Preventing the Spread of Cold Sores

To avoid spreading cold sores:

• Wash your hands frequently
• Avoid close contact with others during an outbreak
• Don’t share food, drinks, or personal items like lip balm

Cold sores can be a persistent issue, but with proper care and management, you can reduce the frequency of outbreaks and prevent spreading the virus to others.

Urological cancer cases are surging at an alarming rate in India. Yet, many patients continue to seek medical help only when the disease has reached an advanced stage. Doctors highlight that cancers affecting the urinary system are often silent during the initial stages and are ignored by people owing to a lack of awareness and hesitation in consulting an expert. It is important to remember that timely urology screening can help detect cancer early, reduce complications, and improve survival rates. Many people ignore symptoms and seek help only during the advanced stages, when the risk of complications also increases. Experts are urging people, especially those at higher risk, to seek early screening and intervention without delay.

What are urological cancers?

“People should prioritise their well-being and seek timely help,” said Dr Pradeep Rao, Head of Department – Urology Oncoscience, Gleneagles Hospital, Mumbai.

Diagnosis and treatment of urological cancers

Dr Pradeep Rao further explained how early-stage urological cancers are often treatable with less aggressive procedures, while advanced cancers require complex treatment and carry higher risks. Diagnosis is carried out through urine examination, ultrasound, and prostate-specific antigen (PSA) testing to detect cancer early. Timely screening and intervention can not only save lives but also preserve organ function. Advanced techniques such as robotic-assisted surgery are now widely used to provide relief to patients. Robotics has made diagnosis, treatment, and the healing journey much smoother for both patients and doctors.

What are the symptoms of urological cancers?

“Urological cancers such as prostate, bladder, and kidney cancer are rising across age groups, yet many patients seek medical help only when symptoms become severe. Each month, two to three patients in the age group of 30–65 consult me when symptoms worsen and the cancer progresses, which takes a toll on their overall well-being. Moreover, signs and symptoms such as blood in the urine, difficulty in urination, pelvic pain, or unexplained weight loss are often ignored, leading to advanced-stage disease that can cause anxiety and panic among patients. Delayed diagnosis can result in serious complications such as kidney damage, the spread of cancer, and reduced quality of life. Early screening and treatment are life-saving. Currently, a combination of robotic surgery, chemotherapy, radiation therapy, and targeted treatments offers better outcomes, but early diagnosis remains the most critical factor for successful recovery,” concluded Dr Anil Bradoo, Consultant Urologist, Zen Annexe, Zen Multispeciality Hospital, Chembur, Mumbai.

What are the benefits of robotic surgeries?

Dr Pradeep Rao also explained the benefits of robotic surgeries. Robotic-assisted prostatectomy for prostate cancer helps with the accurate removal of the prostate while protecting vital nerves, thereby reducing the risk of incontinence and erectile dysfunction. Robotic partial nephrectomy is performed for kidney cancer and helps remove diseased kidney tissue while preserving the kidney, with minimal blood loss and quicker healing. The advantages of robotic surgery include precise tumour removal with minimal blood loss, reduced pain and complications, shorter hospital stays, and faster recovery. Early-stage patients benefit the most from these modern treatments, which is why awareness and screening are so important.

Insulin resistance is a condition in which the body cannot effectively use insulin. Shockingly, this condition is now being linked to first-trimester miscarriages, especially in women with PCOS, with lab markers such as HbA1c and fasting insulin offering early clues. Therefore, it is essential for women to take charge of their health and maintain their blood sugar levels within the recommended range, as per Dr Sushruta Mokadam, Senior Consultant Obstetrician & Gynaecologist, Motherhood Hospital, Kharadi, Pune. The expert went on to talk about other aspects of the same, detailing just how first trimester miscarriages could be a consequence of ignoring high blood sugar or insulin resistance.

Why are miscarriages in the first trimester rising?

Currently, there is a surge in cases of miscarriages during the first trimester, which is raising concern among experts. This may be due to undiagnosed insulin resistance. Yes, that’s right—miscarriage is not only caused by infections, hormonal imbalance, or blood clotting disorders, but also by insulin resistance. Many women fail to pay attention to insulin resistance, which affects how the body processes sugar and plays a major role in causing hormonal imbalance. Women with Polycystic Ovary Syndrome (PCOS) are at a higher risk, as metabolic dysfunction can lead to miscarriage. Many women are experiencing repeated early pregnancy loss but are not screened for insulin resistance, leading to missed opportunities for early intervention.

How are miscarriages and insulin resistance linked?

Miscarriage and insulin resistance link: Insulin resistance occurs when the body’s cells do not respond properly to insulin, leading to higher blood sugar and insulin levels. This imbalance can impact ovulation and egg quality and interfere with the implantation of the embryo. In early pregnancy, it may affect placental development, increasing the risk of miscarriage in the first trimester. In women with PCOS, insulin resistance is commonly present, even in those who are not overweight.

The impact of insulin resistance on reproductive health

High insulin levels can lead to increased androgen (male hormone) production, further affecting reproductive health. This hormonal imbalance can make it difficult for a pregnancy to be sustained, especially in the early weeks, which may result in miscarriage. Lab tests such as HbA1c (which reflects average blood sugar levels over time) and fasting insulin levels can help identify at-risk women. Even subtle elevations in these markers, including those within the upper-normal range, can indicate underlying metabolic dysfunction that may increase the chances of miscarriage.

What to do?

Pregnant women should opt for regular screening, manage blood sugar levels, eat a balanced diet, and exercise daily before planning pregnancy. Even during pregnancy, they should stay in touch with an expert who can guide them throughout the process.

Blood pressure is one of the most important, yet overlooked, aspects of a healthy individual. Little do people realise that the force at which blood presses against the walls of the arteries can have a serious impact on long-term health—heart attack or stroke, for instance. Current guidelines from the American Heart Association state that adults should aim for a blood pressure reading of 130/80 millimetres of mercury (mm Hg). Some experts also say that this target is a little too aggressive for people who are prone to the side effects of blood pressure medication, such as falls and dizziness. But what would be the ideal blood pressure reading for older adults? Harvard Health experts have just answered this question.

Blood pressure reading in the 60s

According to recent studies, an intensive reduction in blood pressure in people aged over 60 is not only safe but is also associated with better outcomes than less aggressive treatment. According to a 2025 review, four randomised controlled trials were compared using two different strategies to control systolic blood pressure. The first aimed for a lower target, while the other strategy aimed for a higher systolic pressure. The trial included 2,600 people aged 75 years and older. Compared with a less aggressive strategy, there was a 39 per cent reduced risk of heart problems such as heart failure, heart attack, or stroke. There was also a 45 per cent lower risk of heart disease-related deaths.

Additionally, researchers noted no differences in the rates of adverse events such as fractures, low blood pressure, cognitive decline, or falls. Upon expanding the analysis, the same conclusions held true for people aged 70 years and above.

Rising hypertension risk

The risk of hypertension rises significantly with age. Among ageing adults, it is known as essential hypertension, as it helps deliver a sufficient amount of blood to the brain. With age, the blood vessels become less flexible and stiffer. Therefore, to reach the brain, an extra push is needed—as a result, systolic blood pressure can rise to as high as 150 mm Hg in people aged 65 years and above.

Doctors, however, are reconsidering their approach to hypertension treatment in older adults. The recent findings suggest that many older people should aim to keep their systolic pressure below 130 mm Hg. This may require a combination of lifestyle changes and medication.

Can one medication work?

According to experts, one medication may not be sufficient to achieve ideal blood pressure. A single drug usually works well to lower blood pressure by an average of 5 to 10 points. Using a lower dose of two different blood pressure medicines is more effective than maximising the dose of one drug. This approach is also less likely to result in side effects.