Hi,looking at your symptom,the crawling sensation which you are feeling in the throat might be due to Phlegm in your throat(the thick viscous substance secreted by the mucous membranes of the respiratory passages).It might be a result of allergy or a common cold. You might find relief by taking Cough Expectorant(containing Ambroxol/Guaifenesin),Antihistaminic(like Cetrizine),Oral and nasal decongestants,Antacid(like Rantac) if suffering from Acid reflux. Do Steam inhalation.Increase fluid intake.Do warm saline gargles,avoid eating dairy products like milk,yogurt,ice-cream which increases mucus production.Quit smoking.Drinking hot tea with honey might give relief. Hope this answers your question.Take care.