Chickenpox is actually a viral infection that triggers an outbreak of itchy, red bumps all over the body. Many children know the misery of chickenpox, as it's one of the most common childhood illnesses. Chickenpox most often strikes children by the age of 12. However, it's very rare in children under the age of 1, according to Baby Center. Young infants' immunities are thanks to antibodies that they receive in utero from their mothers.
Rash
Chickenpox typically first appears as a rash of tiny red bumps that often cover a baby from head to toe. The first bumps may sprout on baby's face, scalp or trunk area before it spreads. The bumps progress into blisters filled with fluid, and more blisters may appear as the virus progresses. These blisters can range from only a few speckles to hundreds covering your child, though infants typically have fewer blisters than older children. The blisters then finally turn into crusty lesions that appear brown in color.
Fever
Babies with chickenpox tend to run a low fever, as infants tend to develop only mild cases of chickenpox. The Nemours Foundation reports that fever typically ranges from about 100 to 102 degrees F, although children with severe cases of chickenpox may run a slightly higher temperature.
Behavior
Babies with chickenpox tend to be a little fussy and lethargic, sleeping more and with less interest in playing or being active. She may have a reduced appetite and be reluctant to eat. And before the spots even appear, you may find that her nose is running or that she has a bit of a cough. Other symptoms can include headache, stomachache and sore throat.
Complications
Chickenpox in babies is rarely serious, but complications can arise in some cases. Babies with a weakened immune system may be more at risk for complications such as pneumonia or encephalitis. Other children may develop a bacterial infection of the skin. If your child starts running a fever several days after symptoms begin or if the rash becomes extremely red or painful, call your pediatrician. You should also call the pediatrician if the rash begins affecting her eyes.


