The symptoms of chickenpox often present no symptoms in infants and toddlers, but they may experience low fever, irritability, and reluctance to breastfeed. Simultaneously, a rash appears. In older children and adults, symptoms can include low fever, headache, fatigue, sore throat, cough, and loss of appetite, followed by the appearance of a rash after one to two days. The rash first appears on the torso and then spreads to the face and limbs. Since chickenpox rash typically appears in batches, at the same site one may see maculopapular rashes, vesicles, and scabs. About a week later, the scabs fall off, generally leaving no scars. However, secondary bacterial infections of the rash can occur, leading to complications such as pneumonia, encephalitis, and hepatitis. Chickenpox is a self-limiting disease that usually resolves itself in about ten days.

Treatment of chickenpox involves isolating the patient until all the blisters have completely scabbed over. During the fever phase, bed rest is recommended, along with easily digestible food and adequate hydration. Skin care should be emphasized to prevent infection. Early antiviral treatment can be effective, particularly if administered within 24 hours of the appearance of the rash, as it can help control the rash's progression and accelerate recovery. In cases of secondary bacterial infection, antibiotics should be used. If encephalitis leads to cerebral edema, dehydration treatment should be administered. The use of corticosteroids is not advisable for chickenpox as they can cause the disease to spread.