Children’s immunity and resistance are not as strong as adults and are susceptible to diseases. At the same time, children are too young to express their physical condition, so parents need to keep an eye on their children’s physical condition and take good care of them. In life, fever and rash are two common sudden symptoms in infants and toddlers, which indicate that the child may be suffering from four diseases, especially for the attention of parents. Children are at a stage of physical development where all organs and organism functions are not yet mature, and thus are easily affected by various factors and fall ill. Fever and rash is one of the most common conditions that parents encounter. So, what are the possible symptoms of fever and rash in children? The following summary is for parents’ reference: Rose rash Rose rash usually appears in children under three years old and is a viral infection, also known as “toddler rash” in outpatient clinics. “The main characteristic of the rash is that the fever subsides and the rash emerges. After 3 to 5 days of sustained high fever, the child’s temperature rapidly subsides and the child’s spirit and appetite gradually recover, but at the same time (about 10 to 20 hours after the temperature subsides), a rash begins to appear centered on the abdomen. The rash is a light red or red macular (papular) rash (hence the name “rose rash” in some countries), about 2 to 3 mm in diameter, surrounded by a red halo, and fading when pressed. The rash appears within 24 hours and is dense on the chest and abdomen and sparse on the face and extremities, with no obvious itching. The symptoms of scarlet fever are similar to those of colds or gastroenteritis, and can be contracted through droplets. The rash disappears slowly after about 3 days. The best prevention is good hygiene and avoiding sharing utensils or contact items with others. Children should be treated promptly once they develop scarlet fever. The basic course of the disease is one week, and they should be isolated and should go out again for about three days after they are well. Take care to rest, eat lightly and drink plenty of water. Exercise more often to strengthen the body’s immunity, do more outdoor exercises, don’t get cold and have more ventilation. Measles Measles is a highly contagious viral disease with fever, runny nose, cough, congested conjunctiva, oral mucous membrane Koch’s spots and red papules on the skin; complications such as pneumonia, laryngitis and encephalitis may occur. Measles patients will infect susceptible persons by sneezing and coughing to expel the virus from the body. China currently has a two-dose immunization program for children with measles: one dose of MMR at 8 months of age and one dose of MMR at 18 to 24 months of age. For other people who have not had measles and have no previous history of measles vaccine immunization or whose history of measles vaccine immunization is unknown, one dose of live attenuated measles-rubella vaccine is recommended. Chickenpox Chickenpox is not released immediately after infection in children, and the incubation period of chickenpox in children is usually about 14 to 21 days. Moreover, the early symptoms of chickenpox are very similar to the cold, and usually there will be two or three days of cold symptoms, making it difficult for parents to distinguish. When a child has chickenpox, his or her whole body will show signs of discomfort, such as body fever symptoms, the temperature will not be too high, about 38 ℃ to 38.5 ℃; may be accompanied by cough or diarrhea, appetite and poor spirit; fever at the same time or after 1 to 2 days, the child’s skin will be itchy. First, red spots the size of rice grains appear. After a few hours or about 1 day, the small red rash will turn into blisters, the size of soybeans or mung beans, containing fluid and surrounded by a red halo; after about 1 to 2 days, the blisters begin to become cloudy and sunken, and after 3 to 4 days the blisters dry and begin to crust. Chickenpox is more common in babies on the trunk and less common on the extremities and head and face, along with complications such as papules and herpes. Having your baby receive routine vaccinations can produce antibodies to prevent chickenpox infection.