MC complication of chickenpox in children –
The most common infectious complication of varicella is a secondary bacterial superinfection of the skin, which is usually caused by Streptococcus pyogenes or Staphylococcus aureus.
The most common extracutaneous site of involvement in children is CNS → Meningitis, Encephalitis, cerebellar, ataxia, Reye's syndrome
Varicella pneumonia is the most serious complication following chickenpox in adults.
Encephalitis
Sec. bacterial infection
Pneumonia
Otitis media