Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concern.
As per your complain
nasal congestion without the other symptoms of allergy like sniffing, watery eyes,
sneezing etc can be due to
Sinusitis caused due to infection in sinuses and fluid accumulation in sinuses secondary to infection can lead to difficulty in breathing through nose..
I would suggest you to consult an ENT exert and get evaluated and he can do a thorough clinical evaluation and advise investigations like PNS view or MRI of sinuses, nasal
endoscopy etc to rule out the exact cause of the problem and treat you accordingly..
As of now you can take decongestant nasal sprays containing
Xylometazoline [Otrivin], do saline nasal irrigations and steam inhalations..
Avoid chilled foods and use a humidifier in your room..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora..