Full formMedical & Health
HLHstands forHemophagocytic Lymphohistiocytosis
Full Form of HLH
What is HLH?
Hemophagocytic Lymphohistiocytosis (HLH) is a rare and life-threatening hyperinflammatory syndrome caused by uncontrolled activation of immune cells, particularly macrophages and cytotoxic T lymphocytes. This leads to a cytokine storm, resulting in damage to multiple organs including the bone marrow, liver, spleen, and central nervous system. In India, HLH is often diagnosed in pediatric intensive care units and hematology departments, though it can affect adults as well. It may be primary (genetic) or secondary to infections, malignancies, or autoimmune diseases. The condition presents with persistent fever, hepatosplenomegaly, cytopenias, and elevated ferritin levels. Early recognition is critical because HLH progresses rapidly and carries high mortality if untreated. The HLH-2004 diagnostic criteria are widely used in Indian hospitals, and treatment includes immunosuppressive agents like dexamethasone and etoposide. For medical students and residents, understanding HLH is important for differential diagnosis of fever of unknown origin and multi-organ dysfunction. With increasing awareness and improved diagnostic facilities, more cases are being reported from tertiary care centers across India. However, challenges remain in terms of cost of treatment and availability of specialized care in rural areas.
HLH का फुल फॉर्म
हेमोफैगोसाइटिक लिम्फोहिस्टियोसाइटोसिस
Example
The paediatrician suspected HLH after noting persistent high fever, cytopenias, and a ferritin level above 10,000 ng/mL, and immediately started the child on dexamethasone and etoposide per the HLH-2004 protocol.
HLH — frequently asked questions
What is the full form of HLH?
The full form of HLH is Hemophagocytic Lymphohistiocytosis.
What are the common symptoms of HLH in children?
Common symptoms include persistent high fever, enlarged liver and spleen (hepatosplenomegaly), skin rash, low blood counts, and neurological problems such as irritability or seizures.
How is HLH treated in India?
Treatment follows the HLH-2004 protocol using dexamethasone, etoposide, and cyclosporine, often in specialized pediatric oncology or immunology centres, with supportive care and sometimes stem cell transplantation for refractory cases.