Hello,
Difficulty in swallowing can be caused due to acid reflux,
sinus infection (causes mucus and fluid to back up in the throat),
infectious mononucleosis,
thyroid nodule, goiter, etc. You are suggested to visit an ENT, get clinically examined. Get X-Ray PNS, modified barium swallow study and endoscopic assessment done to detect the pathology causing you discomfort. Since you are having difficulty in swallowing you should take food that is soft and of liquid texture like porridge, oats, soups, etc. Stay well hydrated.
Get connected to a Physiotherapist or a Speech therapist to help you do exercises that will improve the muscle movement and make swallowing easier. You can take vitamin E rich food or Evion - 400, one caps daily for a month for better lubrication. Steam inhalation may help. Since you have history of sinus problem, you are suggested to get it treated at the earliest. If there is infection, you need a course of
oral antibiotics / antivirals. Neglect may lead to complications (RTI or pneumonia,
malnutrition, dehydration, etc).
Take care. Hope I have answered your question. Let me know if I can assist you further.
Regards,
Dr. Nupur K., General & Family Physician