 [ Symptoms ] i have sinus problems even when i get a cold my nose always remain dry [ Disease ] well blocked nose is due to sinus congestion only so my suggestion is to consult an otorhinolaryngologist and get evaluated a pns view x ray can be done a course of antibiotics anti inflammatory painkillers decongestant nasal spray like xylometazoline saline nasal irrigation steam inhalation can relieve you doing warm compresses  around nose will help use a humidifier in your room avoid very cold atmosphere hope this helps