Fluffy lips accompany a child with a fever, which may be a sign of several diseases. If your child has a fever and his lips are swollen, she may have a mild illness, such as an ulcer, or she may have an allergic reaction. Swelling of the lips and fever are also signs of Kawasaki disease and chickenpox. See a doctor to determine the exact cause of your child's symptoms and eliminate serious problems.

herpes virus
If your child is infected with herpes virus, he may have ulcers on his lips Sores, cheeks, tongue and gums. These sores are painful and can cause the child's lips to swell. Your child may have a fever and difficulty swallowing, which is a side effect of herpes virus. If your child has an oral ulcer with a fever or any sore on his outer lip, take him to the doctor to determine the treatment plan.
Angioedema - Eosinophilia
Angioedema is an allergic reaction that causes hives and itching, causing the child's lips to become puffy. The University of Maryland Medical Center points out that some allergic reactions can cause angioedema - eosinophilia, including urticaria and itching, can cause the child's lips to swell and have a fever. Angioedema - Other symptoms of eosinophilia include muscle pain, decreased urine output, and weight gain. Take the child to see a doctor. If you think she has angioedema - eosinophilia, it is an intermediary. Her doctor can determine the cause of the swelling and develop a plan to prevent future attacks.
Kawasaki disease
Kawasaki disease is an inflammatory disease that usually affects only children. High fever and swelling of the lips are symptoms of Kawasaki disease, accompanied by rash, swelling of the hands and feet and conjunctivitis. If you suspect that your child has Kawasaki disease, it is important to take him to the doctor as soon as possible. In the early days, Kawasaki disease was very treatable. Although most children with Kawasaki disease recover completely, the disease is sometimes severe, leading to coronary artery damage.
Chickenpox
If youThe child has chickenpox and she may experience swelling of her lips, especially if she has varicella blister near her mouth or mouth. Children with chickenpox often have a fever a few days before the blisters appear. If you think your child has chickenpox, take her to the doctor for a diagnosis. If she has chickenpox, avoid taking aspirin or ibuprofen to reduce the risk of developing a secondary disease.