Pain over affected<unk> , possible bleeding from nares
Ascent can cause expulsion of blood and mucous into nares and mask.
Front<unk>  most commonly affected, followed by maxillary<unk> 
Infraorbital branch of fifth cranial nerve runs along base of maxillary<unk> , and can have neuropraxia involving lip and cheek.
Teeth pain can occur.
Ethmoid<unk>  can dissect air through lamina papyracea and cause periorbital emphysema.
Infraorbital branch of fifth cranial nerve runs along base of maxillary<unk> , and can have neuropraxia involving lip and cheek.
Teeth pain can occur.
Ethmoid<unk>  can dissect air through lamina papyracea and cause periorbital emphysema.
Sinus barotrauma
Barotrauma of descent
Otic barotrauma
Parapharyngeal space infection
Pulmonary barotrauma
Tympanic membrane rupture
Buccal space infections
Mask squeeze