The symptoms of rhinitis in 4-year-old children include nasal congestion, pus and nasal discharge, etc. If the condition is more serious, there can also be symptoms of olfactory impairment and fever. 1. nasal congestion: 4-year-old children rhinitis may be secondary to acute rhinitis or upper respiratory tract infection, nasal mucosa inflammatory swelling, or nasal secretion accumulation, can lead to unilateral or bilateral persistent nasal congestion. 2. Runny nose: Nasal cavity can appear pus or sticky nasal mucus, resulting in the baby runny nose, and it is not easy to wipe clean, and even with a little blood. 3. Loss of smell: If the condition is not treated in time, the symptoms of nasal congestion or runny nose will be aggravated, which can lead to the baby’s sense of smell impairment, causing loss of smell. 4. Fever: if the local inflammation is more serious, release too much inflammatory factors, can stimulate the baby’s body temperature regulation center, which may cause fever. If a 4-year-old child suffers from rhinitis, it is recommended that parents bring to the hospital in a timely manner, ask the doctor to clarify the cause of the disease, give targeted treatment.