Def...it is dificulty in swallowing
# Causes
1) congenital
_congenital stenosis of oesophagus
_TEF
_congn. Web
2)Acquired
¤ in oesophgeal lumen_foreign body
¤in oeso. wall_strictvre, ca. Oeso., reflux eso., achalasia cardia, PV syndrome, oesophagitis, oeso. Spasm
¤outside wall_thyroid swelling, secondaries in neck, medistinal abscess and nodes, aortic aneurysm
¤dises. Of mouth and pharynx_stomatitis, tonsilitis, pharyngitis, retropharyngeal absces
¤neurological dis._polio, bulbar paralysis, myasthenia gravis
Other causes r tetanus, rabies
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