Tuberculosis Is Not Just an Adult Disease - Dr Indu Khosla

In many homes, tuberculosis still belongs to an older memory — something associated with adults who cough continuously or require prolonged treatment. So when a child begins falling ill repeatedly, TB is rarely the first thought. Parents try home remedies, change diets, consult multiple clinics, and wait for the illness to “settle”. Meanwhile, the child slowly becomes quieter, thinner, and less energetic, changes so gradual that families adjust to them without realising something deeper may be unfolding.

Paediatricians frequently observe that childhood tuberculosis is not missed because families are careless, but because the illness behaves differently in children. It does not always look serious in the beginning. It blends into everyday childhood sickness.

How Children Actually Get TB

Children usually do not acquire tuberculosis outside; infection most often begins within familiar spaces such as homes, shared bedrooms, or close caregiving environments. An adult with untreated or partially treated TB may unknowingly transmit bacteria through prolonged exposure in the same household.

In younger children, the immune response creates what is called a primary TB complex, where infection settles in the lungs along with nearby lymph nodes. Unlike adults, children may not produce a severe cough. Instead, subtle signs appear: reduced appetite, low stamina, or swollen glands in the neck – medically known as lymphadenopathy.

Many families feel reassured because the child received the BCG vaccination at birth. While BCG protects against severe complications like TB meningitis, it does not fully prevent pulmonary or extrapulmonary TB. And this misconception often delays evaluation.

The Symptoms Families Often Overlook

The early phase rarely feels alarming. School attendance continues regularly. Playtime reduces a little, but is not unusual for kids today. Meals become smaller. Only in hindsight do patterns become obvious.

Warning signs commonly seen in paediatric practice include:

● Lingering fever, especially in the evenings

● Cough lasting more than two weeks without clear improvement

● Poor weight gain or failure to thrive despite adequate nutrition

● Fatigue or loss of usual playfulness

● Persistent swollen lymph nodes in the neck or underarms

● Recurrent illnesses that temporarily improve but quickly return

Because these symptoms resemble routine infections, children may receive repeated courses of medication before TB is even considered.

Why Early Testing Matters Today

With India intensifying efforts toward TB elimination, awareness around childhood screening has grown. Diagnosis today relies on confirming the presence of the tuberculosis bacteria through appropriate laboratory testing.

In children, doctors often obtain samples for testing depending on where the infection is suspected. This may include gastric aspirate samples collected from the stomach, respiratory samples obtained through bronchoscopy, or samples from enlarged lymph nodes if they are present.

These samples are then tested using molecular diagnostics such as GeneXpert, which can rapidly detect tuberculosis bacteria and also identify whether the infection is sensitive to standard TB medicines. Samples may also be sent for culture testing, which helps confirm the diagnosis and guide treatment.

Imaging tests such as chest X-rays also help doctors identify patterns in the lungs that may suggest tuberculosis and guide further evaluation.

Doctors also distinguish between pulmonary TB, affecting the lungs, and extrapulmonary TB, which may involve lymph nodes, bones, or other organs. Once a child is diagnosed, contact tracing often reveals the source case within the family — an important step in protecting everyone at home.

When Parents Should Pause and Seek Evaluation

A medical review becomes important when recovery simply does not follow the usual timeline:

● Fever or cough continuing beyond two weeks

● Noticeable slowing of growth or weight gain

● Persistent tiredness affecting daily activity

● Known TB exposure within the household

● Unexplained lymph node swelling

These signs are not meant to create fear, but improve awareness so families may stay vigilant to changes in a child’s health.

Treatment: The Turning Point Families Often Don’t Expect

Perhaps the most reassuring truth is that drug-sensitive paediatric tuberculosis is highly treatable. With consistent medication and treatment adherence, children usually regain strength steadily. Families often describe recovery not as sudden, but as a return of ordinary moments — a child finishing meals again, running during recess, or asking to play longer outdoors.

Tuberculosis in children often whispers through small changes — slower growth, lingering fatigue, or an illness that simply refuses to resolve. Recognising those early signs can make all the difference in the journey toward recovery.

What may begin as confusion and repeated clinic visits can ultimately lead to full recovery with the right diagnosis and treatment. For many families, it brings an important realisation — that tuberculosis in children does not always announce itself loudly. Sometimes it is simply waiting to be recognised in a child who may not yet have the words to explain how they feel.

Disclaimer: The views expressed in this article are of the author and not of Health Dialogues. The Editorial/Content team of Health Dialogues has not contributed to the writing/editing/packaging of this article.