 Symptoms of envenomation include swelling of the bite site, dizziness and nausea, accompanied by difficulty breathing and swallowing, irregular heartbeat and convulsions progressing to respiratory paralysis.Bites that produce severe poisoning can be quickly fatal.The eastern green mamba was first described as "Naja angusticeps" by a Scottish surgeon and zoologist, Andrew Smith in 1849, who reported it from Natal and east to Maputo Bay.