The<unk>  space is one of three potential spaces that can cause deep neck space<unk> s
retrophanygeal space
submandibular space<unk> s arise from foci in the mandibular teeth, tonsils, parotid gland, deep cervical lymph nodes, middle ear, or sinuses.
Polymicrobial
Proximity to the carotid sheath makes erosion into vasculature a possible complication
Parapharyngeal space infection
Streptococcal pharyngitis 
Buccal space infections
Neisseria gonorrhoeae
Nasal foreign body
Diphtheria 
Retropharyngeal abscess
Bacterial Tracheitis