thank you for posting your query in healthcaremagic.com.... first of all, dont be terrified....from your description, it does not seem to be a very severe problem.... achalasia is a sort of muscle disorder in throat for which there is excess dilatation of one part of the esophagus and there is difficulty in swallowing....there are a few medications and if they dont work, there is an operation of the throat which is near curative....so dont worry so much... and for the enlarged tonsil and lymph node in the neck, probably you have chronic tonsillitis alongwith maybe pharyngitis and the lymoh node is enlarged for that reason only...maybe you have not taken medicine properly or for some other reason that it has persisted for so long.... so visit an ENT specialist and he would be able to put you on antibiotics or if needed tonsillectomy can be done.... all of the things i told above is not very serious and other diagnoses are though possible but unlikely.... you should also definitely leave the habit of smoking for once and for all....it has serious bad effects on health.... hope this was helpful.... contact me for any further advice.... regards