Tempelkan es selama 20 menit. Gunakan pereda nyeri tanpa resep dokter. Cobalah berjalan-jalan. Gunakan panas basah (moist heat) setelah 72 jam. Mintalah suntikan kortison kepada dokter.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Use an ice pack wrapped in a soft towel. Lie on your back and place the ice pack underneath you on the spot where the spasm occurred. Relax in this position for about 20 minutes, breathing deeply.  You may want to lie on an incline to reduce the pressure on your back. For a lower back spasm, you may get more relief if you elevate your legs. Repeat as needed every 2 hours for the next 48 to 72 hours. Don't lay on the ice pack for more than 20 minutes at a time, and don't fall asleep on an ice pac