Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain numb feeling of the lips can be related to chronic sinus infection as inflamed sinuses can caused inflammation in the adjoining areas causing them to be either painful or numb due to inflammation that can also effect the nerves in that area.. Swollen feeling is due to numbness as it is common to have a perception that a swelling is present when an area becomes numb, it perceives to be heavy and swollen.. I would suggest you to consult an Otolaryngologist and get evaluated and a thorough clinical evaluation and investigations like PNS view x ray or MRI scan can help in diagnosis and treatment can be done accordingly.. You can be advised a course of antibiotics, anti-inflammatory painkiller like Ibuprofen, decongestants like Pseudoephadrine, do saline nasal irrigation, steam inhalation and use a humidifier in your room.. You can also be advised decongestant nasal sprays containing Xylometazoline or Oxymetazoline.. Avoid spicy and chilled foods.. Do warm compresses around nostrils.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.