Nasal Myiasis causes obstruction of nasal passages and severe irritation. In some cases facial edema and fever can develop. Death is not uncommon.
Aural Myiasis causes crawling sensations and buzzing noises. Smelly discharge is sometimes present. If located in the middle ear, larvae may get to the brain.Ophthalmomyiasis is fairly common, this causes severe irritation, edema, and pain.
The main symptoms of nasal myiasis are foreign body sensation and itching in throat, being followed by cough and then other various, respiratory and nasal manifestation such as nasal discharge, sneezing, laryngospasm, dyspnea and stridor.
The diagnosis of myiasis is made by seeing the larval movement. Since the nasal cavity has inaccessible areas, removal of maggots can be difficult by conventional instrument and several settings are required. To overcome this problem, a nasal endoscope can be used for a direct vision.