Daijiworld Media Network - New Delhi

New Delhi, Nov 3: Tuberculosis (TB) remains a major public health concern in India, but its impact is not limited to the lungs. The disease can also affect the brain and central nervous system, with Central Nervous System Tuberculosis (CNS TB) posing a serious risk to children if not diagnosed and treated promptly.

CNS TB includes conditions such as tuberculous meningitis and brain tuberculomas. Delayed diagnosis and treatment can result in permanent neurological damage, particularly in children whose brains and nervous systems are still developing. The challenge becomes more complicated when the infection involves drug-resistant TB strains.

Unlike pulmonary TB, CNS TB in children can present with symptoms that are difficult to recognise in the early stages. Persistent or worsening headaches, vomiting, fever, excessive sleepiness, irritability, behavioural changes, convulsions, limb weakness, difficulty walking, visual disturbances and altered consciousness require serious medical attention.

In infants and younger children, the warning signs may be less obvious. Poor feeding, lethargy, developmental delays, impaired motor functions and changes in behaviour or interaction with parents may indicate an underlying neurological problem. Since young children may not be able to communicate their discomfort, parents and caregivers need to watch for unusual physical and behavioural changes.

Diagnosis is often challenging because several other illnesses can produce similar symptoms. Doctors may therefore rely on a combination of clinical examination, MRI or CT scans, cerebrospinal fluid analysis and microbiological or molecular tests. Testing for drug resistance is particularly important, as standard TB medicines may not be effective against resistant strains.

In some cases, the number of TB bacteria present in cerebrospinal fluid may be very low, making laboratory confirmation difficult. Doctors must consequently consider clinical findings, imaging results and other available evidence before deciding on treatment.

Drug-resistant TB occurs when the bacteria are resistant to one or more medicines used to treat the infection. Treating drug-resistant CNS TB presents additional challenges because specialists must consider both the drug-susceptibility pattern and the ability of medicines to penetrate the central nervous system.

Treatment depends on the type of drug resistance and the child's overall condition. It may require specialised medical care, prolonged medication and close monitoring for treatment response and possible side-effects. Ensuring adherence is equally important, as interruptions in the prescribed course can lead to treatment failure and further drug resistance. Families must receive proper counselling about medication schedules, follow-up visits and the importance of completing the entire course.

CNS TB can also cause serious complications, sometimes even before the disease is diagnosed. These include hydrocephalus, seizures, cerebrovascular complications, cranial nerve dysfunction and increased pressure inside the skull. In children, such complications can affect cognitive abilities, learning, mobility and overall development.

Early diagnosis and appropriate treatment can reduce the risk of permanent neurological damage. However, recovery from brain TB does not always mean that all complications disappear. Depending on the extent of damage, some children may require neurological and developmental support, physiotherapy, occupational therapy or psychological rehabilitation.

Managing drug-resistant brain TB in children calls for a multidisciplinary approach involving paediatricians, neurologists, infectious disease specialists, radiologists, microbiologists and rehabilitation experts. Regular clinical assessments and imaging help doctors monitor treatment progress and identify complications requiring urgent intervention.

Parents should seek immediate medical attention if a child develops increasing drowsiness, convulsions, persistent vomiting, weakness, changes in consciousness, or sudden visual or behavioural disturbances.

Early recognition of neurological symptoms is essential because diagnosing brain TB, particularly drug-resistant infection, can be complicated. In children, timely diagnosis and treatment are not merely about controlling the infection but also about protecting neurological functions, learning abilities and healthy development.