For the infection to develop in humans, the two main factors required are exposure to contaminated water, and abrasion or injury to the skin. Hence, this infection is commonly seen in individuals who clean fish tanks, handle ornamental fish and work in wet fields. Aquatic systems with a high density of fish and warm waters appear to be conditions particularly favorable to this infectious agent, and increase the changes to contract fish tank<unk> . Poor water quality and various nutritional deficiencies are also possible contributing factors. Swimming pool<unk>  can occur when there is inadequate chlorination of swimming pools.
Aquarium granuloma
Dentigerous cyst
Papillary hidradenoma
Rhinoscleroma
Tornwaldt cyst
Paradental cyst
Nevus of Ota
Actinic granuloma