It is an acute form of heat rash associated with excessive sweating,specially during humid climate. In Ayurveda, this is known as pidaka.
It consists of small superficial eruptions which look like grains of sand. It affect almost any part of the body. Pricking, burning sensation and itching cause a lot of discomfort, and may cause secondary bacterial infection.
Persons having paittika type of physical constitution are more prone to get this skin trouble. Such type of patients should avoid heat and humidity. Intake of Pravala pishti in a dose of 0.5 gms, twice a day with honey, help both in preventing and curing this disease.
Use of fresh air and physical exercise helps both in preventing and curing this condition. Care should be taken to see that the sweat is wiped off the body as soon as it appears.
Almond and almond oil, grapes, specially dry grapes, are very useful for the patients. Fruit juice should be given to him in plenty.
Mudras like vaayu-vardhak and vaayan mudra are very effective in this condition.