Why do I keep sneezing and having a runny nose due to an itchy nose, and what should I do?

　　The nose refers to the nasal area. Generally, nasal itching, frequent sneezing, and runny nose may be caused by factors such as upper respiratory tract infection, allergic rhinitis, vasomotor rhinitis, sinusitis, or nasal polyps. Symptomatic treatment can be provided according to the specific cause. It is recommended to visit a reputable hospital and follow the guidance of a qualified physician. Detailed explanations are as follows:

　　1. Upper Respiratory Tract Infection

　　Upper respiratory tract infections may be caused by bacterial or viral infections. These infections may irritate the nasal area, causing itching, sneezing, and a runny nose. After consulting a doctor, medications such as aspirin tablets, ibuprofen capsules, or oseltamivir phosphate capsules may be used to alleviate symptoms.

　　2. Allergic Rhinitis

　　Inhalation or contact with allergens such as pollen or dust mites may lead to allergic rhinitis, which can cause nasal itching, frequent sneezing, and a runny nose. Under a doctor's guidance, medications such as cetirizine hydrochloride oral solution, budesonide nasal spray, or triamcinolone acetonide nasal spray may be used to relieve discomfort.

　　3. Vasomotor Rhinitis

　　Vasomotor rhinitis may involve non-allergic, non-infectious inflammation of the nasal mucosa. This inflammation may cause nasal itching, leading to sneezing and a runny nose. As directed by a physician, medications such as budesonide nasal spray or mometasone furoate nasal spray may be used for improvement.

　　4. Sinusitis

　　Sinusitis may be caused by a bacterial infection of the nasal sinuses. Due to inflammatory irritation, nasal itching may occur, along with symptoms such as sneezing and a runny nose. Under a doctor's guidance, medications such as roxithromycin tablets, cephalexin dry suspension, or clindamycin hydrochloride tablets may be used to alleviate symptoms.

　　5. Nasal Polyps

　　Nasal polyps may develop due to chronic inflammation in the nasal cavity. Improper care may lead to the formation of polyps, causing nasal itching accompanied by sneezing and a runny nose. It is recommended to follow medical advice and undergo endoscopic surgery for polyp removal.

　　It is advisable to maintain good indoor ventilation, reduce the accumulation of dust and pollen, undergo regular medical checkups, monitor symptom changes, maintain a light diet, and avoid long-term consumption of irritating foods such as stinky tofu, durian, and chili peppers, which can benefit overall health.