What Is Alkaptonuria? The Rare Disease That Turns Your Pee Black – Here’s Why

Updated Feb 7, 2025 | 08:00 AM IST

SummaryAlkaptonuria is a rare genetic disorder that causes black urine due to homogentisic acid buildup, leading to joint pain, cartilage damage, and skin discoloration. It has no cure but can be managed.
What Is Alkaptonuria? The Rare Disease That Turns Your Pee Black – Here’s Why

Image Credit: Canva

A condition, known commonly as "black urine disease" or Alkaptonuria is a rare genetic disorder involving protein metabolism, and it has its root in the mutation of the homogentisate 1,2-dioxygenase gene, which in turn causes homogentisic acid accumulation in the body. The appearance of dark urine after exposure to air is due to this kind of accumulation; however, a variety of symptoms can be expected, such as joint stiffness, changes in pigmentation, and other long-term health complications. Although the prevalence has been estimated to be between 1 in 250,000 and 1 in 1 million people in the United States, its effects are indeed high on those affected.

Alkaptonuria is an autosomal recessive disease, meaning that the child must inherit a defective copy of the HGD gene from both parents. If both parents are carriers, their offspring have a 25% chance of inheriting two faulty genes and developing alkaptonuria. The condition is genetic but is often not diagnosed for years because it progresses slowly and its early symptoms appear to be harmless.

Symptoms of Alkaptonuria

The most characteristic and common initial symptom of alkaptonuria is dark urine. The reason for this is due to the fact that excess HGA is excreted in the urine and upon oxidation in the presence of air, it gives the urine a brown or black color. Though it is often considered cosmetic, the long-term accumulation of HGA within the connective tissues produces more complicated health problems.

Progressive joint pain and stiffness: The accumulation of HGA in cartilage leads to early-onset osteoarthritis, making movement increasingly difficult over time.

Skin and eye pigmentation changes: Affected individuals may develop bluish or grayish discoloration of the sclera (white part of the eye) and the skin, particularly in areas exposed to friction.

Cardiovascular and respiratory problems: With age, HGA accumulation can lead to valve calcifications in the heart and stiffening of connective tissues in the respiratory tract, which can cause problems in middle and old age.

Decreased mobility and spinal problems: The spine may become stiff and painful due to chronic cartilage degeneration.

These symptoms usually begin to manifest during adulthood, leading to severe complications in a person's 40s or 50s and significantly affecting the quality of their life.

How is Alkaptonuria Diagnosed?

Because of its rarity, alkaptonuria is often mistaken or overlooked early in life. However, there are several ways to confirm the condition:

Urine Testing: The gold standard in the diagnosis is the testing of urine samples for high levels of homogentisic acid via gas chromatography. In case of oxidation, which changes the color of urine to black, it is indicative of alkaptonuria.

Genetic Testing: Confirmatory genetic testing reveals mutations of the HGD gene to diagnose the condition conclusively.

Blood Tests: High levels of HGA in the blood can be used as further evidence.

Imaging Studies: X-rays and MRIs will expose cartilage and joint damage characteristic of alkaptonuria.

Management of Alkaptonuria: Is There A Cure?

At present, there is no cure for alkaptonuria; however, various treatment approaches can reduce its symptoms and slow the disease's progress:

Nitisinone Therapy: Nitisinone is a drug that inhibits the production of HGA. It has been shown to reduce HGA levels and slow tissue damage. However, it needs to be taken under close medical supervision because of potential side effects.

Low-Protein Diet: Since HGA is a byproduct of protein metabolism, reducing protein intake—especially foods rich in tyrosine and phenylalanine—may help decrease HGA production.

Pain Management: OTC pain relievers and anti-inflammatory medications can be used to relieve joint pain and stiffness.

Physical Therapy: Exercise regularly, as it may improve mobility and strengthen muscles, thus reducing strain on affected joints.

Surgical Interventions: Most people with alkaptonuria develop severe osteoarthritis necessitating joint replacement in their old age. Also, some may require heart valve replacement surgery if cardiovascular complications develop.

Life with Alkaptonuria

Although alkaptonuria is not fatal, it severely affects the quality of life. The progressive deterioration of the joints and associated symptoms can make everyday activities difficult, requiring lifestyle changes and medical interventions. The disease may cause premature aging of the joints, requiring walking aids and mobility assistance earlier than expected.

Ongoing research will continue to work on improving the treatment options by focusing on gene therapy and alternative enzyme replacement therapies. However, because of its rarity, the clinical trials and research remain sparse.

As genetic research advances, more hope for better management and possible curative approaches for alkaptonuria exists. Scientists are searching extensively for enzyme replacement therapies and innovative drugs that can target the root cause of the disorder. Being aware and being diagnosed early helps individuals better their condition and ultimately have better long-term health outcomes.

Alkaptonuria is a striking example of how one gene mutation can have widespread effects on the body. Though still a rare and often misunderstood condition, growing awareness and advances in treatment are paving the way for better care. If you or a loved one suspect symptoms of alkaptonuria, it is essential to seek early diagnosis and medical guidance to manage the disease effectively and preserve quality of life.

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Double Covid Surging Across UK, Doctor Urges Immediate Vaccination

Updated Jan 25, 2026 | 01:00 PM IST

Summary Doctor warns of “double Covid” as UK cases rise, explaining how people can be reinfected while still unwell, the latest symptoms to watch for, and who should get the Covid vaccine now.
double covid vaccination

Credits: Canva

A GP has warned that people can catch Covid more than once in a short span, including while they are still unwell from a previous infection. In some cases, this may even involve picking up two strains of the virus at the same time, a situation doctors are calling “double Covid”.

Doctor Warns of ‘Double Covid’ as UK Cases Rise

New figures from the UK Health Security Agency show confirmed Covid cases have risen by 11 per cent. In the week leading up to January 9, 51 deaths were recorded and more than 500 people were in hospital with the virus.

Can You Catch Covid Twice at the Same Time?

Speaking to the BBC, GP Dr Nish Manek said it is possible to be infected again while still dealing with ongoing symptoms, including long Covid. She explained that having long Covid does not provide immunity against reinfection.

According to Dr Manek, protection from a previous infection or vaccination reduces over time. New variants are also better at evading the immune system, making repeat infections more likely.

Why Long Covid Does Not Protect You

Dr Manek said immunity can fade within months, leaving people vulnerable. New strains of the virus, including recent Omicron-related variants circulating in 2025, are able to bypass existing immune defences.

As a result, someone managing long Covid symptoms may still catch Covid again. A fresh infection can trigger a relapse of symptoms or slow down recovery.

She added that a positive test may reflect either the same strain or a new variant. In both cases, it is still Covid and should be taken seriously.

Vaccines Still Reduce Severe Illness

Dr Manek stressed that vaccination remains important. While vaccines may not fully prevent infection, they significantly reduce the risk of severe illness and hospitalisation.

She said Covid continues to change and remains present in the community. Simple protective steps still matter, including testing when unwell, wearing masks in crowded indoor settings, and staying up to date with vaccinations.

Which Covid Variants Are Circulating Now

As of January 2026, Covid continues to evolve in the UK. One of the most common strains currently in circulation is NB.1.8.1, often referred to as the Nimbus variant.

Latest Covid Symptoms to Watch For

Doctors say symptoms linked to current variants often affect the upper respiratory tract and can feel similar to a bad cold or flu.

Commonly reported symptoms include a very painful sore throat described as feeling like razor blades, a hoarse voice with swollen glands, blocked or runny nose, sneezing, and extreme tiredness. Fever, a persistent cough, and body aches are still widely seen.

Loss of taste or smell is now reported far less often than during the early stages of the pandemic.

Who Is Eligible for a Covid Vaccine in the UK

The UK has moved to a targeted vaccination approach, focusing on those most at risk of serious illness.

The current winter vaccination programme is coming to an end. The final date to receive this dose is January 31, 2026. You are eligible if you are aged 75 or over, live in a care home for older adults, or are aged six months or older and immunosuppressed due to medical treatment or long-term conditions.

A spring booster programme has been confirmed for 2026. Appointments are expected to open in late March, with vaccinations starting from April 13. Eligibility criteria remain the same as the winter programme.

How To Book Your Covid Vaccine?

Eligible individuals do not need to wait for an invitation. Vaccinations can be booked online through the NHS website, via the NHS App, by calling 119 for free, or by visiting a walk-in pharmacy or clinic.

Doctors continue to urge those eligible to get vaccinated while doses are still available.

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Doctors Warn: This Skin Pattern Could Signal Blocked Arteries

Updated Jan 25, 2026 | 11:48 AM IST

SummaryA net-like blue or purple pattern on the skin may signal blocked arteries, experts warn. Learn what livedo reticularis is, when it is harmless, and when it could point to serious heart disease.
Livedo Reticularis

Credits: AI Generated

A lace-like pattern appearing on the skin may sometimes point to blocked arteries. Health experts warn that this netted discoloration can, in certain cases, be linked to damage in tissues and organs.

Heart and circulatory diseases remain the leading cause of death worldwide, claiming close to 18 million lives every year. This group includes serious conditions such as stroke, coronary artery disease, and heart failure.

An Unusual Skin Pattern That Could Signal Artery Blockage

In the UK, cardiovascular disease is responsible for around one quarter of all deaths. Because of its scale and severity, recognising warning signs early can save lives.

Most people are familiar with common symptoms like chest pain. What is less widely known is that heart-related problems do not always announce themselves clearly. Some signs are subtle and can appear in unexpected places, including the skin.

What Is Livedo Reticularis?

The American Academy of Dermatology highlights one particular skin pattern that may be linked to heart and blood vessel problems. A blue or purple, net-like discoloration on the skin can sometimes indicate reduced blood flow or a blocked artery.

This condition is known as livedo reticularis. It is believed to occur when small blood vessels near the skin tighten suddenly or when circulation close to the skin becomes uneven.

When the Pattern Is Usually Harmless

In many cases, livedo reticularis is not a cause for concern. Cold temperatures are a common trigger, and the pattern often fades once the skin warms up. Certain medications can also produce this effect without posing a serious health risk.

According to the dermatology body, some people notice the pattern when they feel cold, only for it to disappear as their skin warms. When medication is responsible, it is generally considered harmless.

When It May Point to a Serious Condition

In some situations, the same skin pattern can be linked to a condition known as cholesterol embolisation syndrome. This happens when tiny arteries become blocked by cholesterol particles.

Such blockages can interfere with blood supply and lead to damage in tissues and organs. For this reason, experts stress the importance of medical evaluation to rule out any underlying or undiagnosed disease.

When to See a Doctor

The Mayo Clinic advises seeking medical advice if the mottled skin does not fade with warmth or if it appears alongside other worrying symptoms. You should also consult a doctor if painful lumps or sores develop in the affected area, if you already have a condition that affects blood flow to your limbs, or if you have a connective tissue disorder and notice new skin changes.

Doctors also caution that a similar-looking condition, called livedo racemosa, is more often linked to serious underlying illnesses.

Other Warning Signs of Heart Disease

Skin changes are only one possible clue. Other symptoms linked to heart disease include chest discomfort, pain or weakness in the arms or legs, shortness of breath, irregular heartbeats, dizziness, unusual tiredness, and swelling in the limbs.

If any of these symptoms feel concerning or persistent, it is important to speak to your GP for further advice.

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Man Diagnosed With ‘Uterus’ in Madhya Pradesh Sonography Report, Sparks Outrage Over Diagnostic Negligence

Updated Jan 25, 2026 | 02:04 AM IST

SummaryA diagnostic error in Madhya Pradesh’s Satna shocked many after a sonography report wrongly stated a 47-year-old man had a uterus. The mistake surfaced during follow-up treatment, raising concerns about diagnostic negligence, patient safety, and accountability. An investigation has been launched by health authorities.
Man Diagnosed With ‘Uterus’ in Madhya Pradesh Sonography Report, Sparks Outrage Over Diagnostic Negligence

Credits: Canva and X

A diagnostic report from Madhya Pradesh’s Satna district has sparked shock and concern after it incorrectly stated that a 47-year-old man had a uterus. The incident has raised serious questions about negligence and accuracy in medical testing.

The report was issued to Niranjan Prajapati, chairman of the Uchehra Nagar Panchayat, who had gone for a sonography after experiencing abdominal pain and swelling. Instead of clarity about his condition, he received a report that appeared to describe female reproductive organs, including an inverted uterus.

How the Error Came to Light

Prajapati underwent the ultrasound at a diagnostic center on Station Road in Satna on January 13. Initially, he did not closely examine the report and followed the prescribed treatment. However, when his condition did not improve, he sought further medical advice.

“I was sick and had stomach pain. I first got treatment in Unchahara and then went for sonography in Satna,” Prajapati said. “I did not pay much attention to the report at first and took medicines, but there was no relief.”

He later visited a doctor in Jabalpur, where the mistake was clearly identified. “The doctor told me straight that this report cannot belong to me,” Prajapati recalled. “I said the report has my name on it, but it mentioned a uterus. That is when I realized something was seriously wrong.”

Questions Over Diagnostic Negligence

The report not only listed a uterus but also described its position, despite the patient being male. Medical experts say such an error goes far beyond a minor clerical mistake.

A senior doctor, speaking on condition of anonymity, said incorrect diagnostic reports can have serious consequences. “A wrong sonography report can mislead treatment, cause unnecessary stress to the patient, and in some cases become life-threatening if doctors act on false findings,” the expert said.

Attempts to seek clarification from the diagnostic center did not yield answers. Dr Arvind Saraf, associated with the facility, declined to comment on the incident, adding to concerns about accountability and quality checks.

Complaint Filed, Health Department Responds

Following the incident, Prajapati filed a formal complaint at the local police station. The matter has also been taken up by the Health Department.

Chief Medical and Health Officer of Satna, Dr Manoj Shukla, confirmed that an investigation is underway. “This complaint has come to my notice. We are examining the report thoroughly. If any irregularity or negligence is found during the investigation, appropriate action will be taken,” he said.

Officials are expected to review how the report was generated and whether standard diagnostic protocols were followed.

What Is Sonography?

Sonography, also known as ultrasound, is a commonly used imaging test that uses sound waves to create images of internal organs. It does not involve radiation and is generally considered safe. However, experts stress that accuracy and proper verification are crucial, as reports directly guide diagnosis and treatment.

The incident has once again highlighted the need for stricter checks and accountability in diagnostic services, especially when errors can directly affect patient health and trust in the medical system.

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