Dry syndrome is generally caused by infection, heredity, immunity and other factors, the symptoms of children are mainly divided into dry mouth symptoms, dry keratoconjunctivitis symptoms. 1. Symptoms of dry mouth: children need to drink water frequently when they speak, and in serious cases, they need to get up at night to drink water, and their teeth will gradually turn black and fall off in small pieces, and their tongues will be painful, dry and cracked, and ulcers will appear on their tongues. 2. Symptoms of dry keratoconjunctivitis: children will have dry eyes, few tears, foreign body sensation in the eyes and other symptoms, when the condition is serious, the patient will have no tears when he cries in pain. 3. Accompanying symptoms: the child’s skin will also appear the size of rice grains and the border of the red papules, nodular erythema, etc., the patient’s joints will also appear pain, some patients will appear joint swelling, the patient’s digestive system will also appear symptoms, such as indigestion, gastric acid reduction, etc.. If the above symptoms appear, you should go to the hospital in time to consult a doctor, after diagnosis and under the guidance of the doctor for treatment.