Other causes of ectropion are scarring, burns, trauma (called cicatricial ectropion), spasm of the orbicularis muscle, which may affect either the upper or lower eyelid, or paralysis of the orbicularis muscle in which only the lower eyelid is affected.
It is possible that there is nothing wrong with your water heater. There is a pressure relief valve on top that may be releasing water because your primary water pressure reduction valve for the house is worn out. The fact that the leak is intermittent suggests this.
Hot Water Heater Condensation. Hot water heater condensation can scare you when it happens. It may appear that your tank is leaking. Sometimes when you run a lot of cold water into the tank, for instance when it is used quite a bit, you will get condensation that drips onto the floor.