Respected Sir, hi I evaluated your query. Petechiae is subcutaneous venous congestion following any compression of unknown tissue insult caused by vivid factors. Dear it`s not disastrous at all, what you have to do is to follow simple steps ; * Apply ice 4-5 times a day to affected area. * Keep the area clean and dry. * Avoid strenous exercises temporarily. * Avoid excess standing or cross leg sitting in one position. * Avoid tobacco / alcohol if consuming. * Maintain your BP , Blood Sugar levels under control. * In our clinic after clinical examinations if required we prescribe Cephalosporin group of antibiotics with anti-inflammatory agents according to the scenerio of presentation. Hope this rectified your query. Thanks for using Health Care Magic and reviewing my answer with such eageness. Regards. Wishing you fast and speedy recovery from the same. Bye Dear Take care.