“…[10] Another study performed by Santhosh and associates (2017) highlighted that all (100.0%) patients had neck pain, followed by dyspnoea (47.0%), drooling (44.0%), hardness of voice (44.0%), trismus (39.0%), odynophagia (29.0%), swelling (26.0%), fever (17.0%) and dysphagia (15.0%). [1] As far as etiological factors of DNSI are concerned, study revealed that most causative factor was odontogenic infection which was prevalent among 36.0% patients while 10.0% had tonsillopharyngitis, 10.0% infected lymphadenopathy, 4.0% trauma, 16.0% patients had salivary gland infections and 14.0% patients had complicated otitis media while 10.0% were unknown. Likewise Gujrathi and teammates (2016) also highlighted in their study that odontogenic infection was prevalent among 24.1% patients while 13.3% had tonsillopharyngitis, 1.5% furunculosis, 21.5% suppurative lymphadenopathy, 10.4% tuberculous lymphadenopathy, 13.3% had salivary gland infections, 5.9% infected cysts, 7.4% had complicated otitis media and 0.4% had foreign body while 2.2 were unknown.…”