Hi welcome to HCM Ihave gone thru your query regarding your itchy throat followed by cough and watery eyes. Dear , any problem troubling you, is a cause for concern and should be handled ASAP . A runny nose or watery eyes means that your nasal lining is producing excessive amounts of mucus. There are many factors casing you all these symptom like toxins due to polution from air we inhale ,from food we eat or water we drink . Then again, allergies can cause similar symptoms. Dust exposure can cause congestion, runny nose, cough, shortness of breath outdoor pollens and molds, causes nasal congestion, itchy eyes, and more. .The common cold is a viral respiratory infection causing sore throat, stuffy or runny nose, headache and watry eyes. All these symptoms are effort to expel the toxins out of our body accumulated in our body by inhaling outdoor impurities or eating faulty foods, living unhealthy life style , knowingly or unknowingly . Any amount of medication is not going to work unless you ,modify your food habits and life style and increase your immunity . Iincluding essential nutrients in your diet as Fiber , Vitamins , minerals , antioxidants ,in natural form fresh fruit , veges ,lemon juice , honey , ginger , garlic Aloe vera , amonds and walnut ,soups , sabodana khichdi. Take small meals every 2 hours . Lot of fluid . , lemon juice in a glass of water with little salt and black pepper 2-3 timmes a day .and am;la juice 25 ml twice daily , treats many health problems,and strengthens the body s immunity, and help fights infection . Drink warm water when you need to drink . Taking lot of water helps detox your system and helps thinning the mucus makes flow smooth and lightens the head and passages of nostrils and help eradicate toxins Pranayam - deep breathing and meditation ,Anulom vilom & Tribandh under trained guidance , help increase immunity . Inhaling warm salt water through both the nostrils oneby one , ,with Neti pot and sniffing out thoroughly , help detox the nasal passages Turmeric powder a great antioxidant natural antibiotic and anti inflammatory , help strengthening your immunity gives resistance from all infections ., Avoiding fast ,fried foods , tea coffee , alcohol , smoking , anxiety,, tension constipation help removing the cause of infection . Hope this helps solve your query . With various home remedies for runny nose and related symptoms the likes of nasal congestion, sneezing, and cough, you may however be able to get back your optimum health faster.