If you are a healthy person experiencing new onset petechiae for no reason (you haven't been vomiting, straining, or doing something else that would easily explain the condition), you should see a doctor about it. Though petechiae usually go away on their own if you don't have another disease, it's best to find out if they have an underlying cause. It's especially important to take your child to the doctor if she gets petechiae for no reason that you can see, and if it covers a large part of her body. If you have an infection or disease that causes your petechiae, the best way to treat the petechiae is to try to cure the disease. Your doctor can help you decide what medication is best for your disease. In older people who's blood clotting system is naturally less effective, even minor trauma can cause significant petechiae. One way to prevent petechia if you're older is to try to avoid trauma. Of course, sometimes you can't avoid an injury, but do not take unnecessary risks. For instance, if you have trouble balancing properly, consider using a cane or walker. This may cause petechiae due to trauma, injury, or straining to disappear, but it will not treat any underlying conditions which cause petechiae. Cold can help cut down on inflammation and can help reduce future petechiae, as well.  To make a cold compress, wrap an ice pack in a washcloth or towel and hold it against the area with petechiae 15 to 20 minutes or less if you can't stand it that long. Do not put an ice pack directly on your skin, as it can cause damage to your skin. You can also just use cool water on a washcloth held up to the area. The main way to get rid of petechiae is to wait for them to heal on their own. Once you treat the underlying cause, the petechiae should fade away.

===
Write a summary of the previous text in Indonesian:
Kunjungi dokter. Rawat penyebab yang mendasari penyakit. Lindungi diri jika sudah lanjut usia. Cobalah kompres dingin. Tunggu sampai petechiae sembuh.