is the most common cause of cutaneous myiasis. However, external ophthalmomyiasis encompasses <5% of all cutaneous sites.1,5
The human botfly is not indigenous to North America. However, there are several dozen reports in the literature of D hominis
ophthalmomyiasis occurring in the US among those who have travelled to Central and South America. A recent review by Denion and co‐workers2
describes eight of nine cases of external ophthalmomyiasis owing to D hominis
originating in tropical American countries. One case presumably originated in New York3
; however, diagnostic inaccuracy was suspected given the lack of defining features required to identify this species.
Reports of myiasis caused by D hominis
are appearing more frequently because of increasing international travel.1,2
Currently, a history of travel to or residency in a tropical American country is needed to raise clinical suspicion of dermatobiasis.2
Pathological analysis and identification of the larva and therefore appropriate diagnosis cannot be achieved if the species is not first suspected. We are presently unaware of previous reports of external ophthalmomyiasis caused by D hominis
found in the US that do not include a history of foreign travel. Thus, our case, originating in Fort Walton Beach, could imply migration of a species. Furthermore, Fort Walton is located at a latitude of 30.4 N, which is just north of what is considered tropical America (18 S to 25 N).5
Consequently, Fort Walton's subtropical climate (www.britannica.com
) could be compatible with life for D hominis
, especially in light of changing global temperatures.7
Therefore, it is plausible that if the species were brought into the area by travellers from endemic regions, the botfly could have been able to survive and adapt to this climate. Certainly, there needs to be more cases to support these theories. This case highlights the need to recognise this species as an aetiological agent causing external ophthalmomyiasis in cases originating in North America.