Using electrolytes without providing water is counterproductive. Water should always be available during rest and after exercise. The addition of electrolytes to the horse's diet is essential during periods of prolonged exercise, or high temperatures and humidity. The use of commercial preparations or homemade recipes added to the diet or administered before exercise is helpful in assisting your horse perform safely and can help prevent severe health problems associated with hyperthermia and dehydration. My horse came home from the trainers with Warts on his nose.
Warts are viral in origin, and infectious by nature.
Generally they require damaged skin to develop. This could be insect bites, abrasions around the muzzle or genitalia, or sunlight damage. Warts are a self limiting disease and will regress naturally in 1 - 12 months. There is immunity that follows, so you usually only have to go through this once. Also, for this reason, young horses are more likely to be seen with the condition.