 [ Symptoms ] a 22month old with a arm temp of 101 5 & does not want to play which is not normal for him  he has been drinking fluids alittle but he has been sleeping alot i also had given him tylenol at 700am but does not seem to be helping should i be alittle worried cause it definitely not like him to not be playing or sleeping alot [ Disease ] ibuprofen is used to relieve pain from various conditions such as headache dental pain menstrual cramps muscle aches or arthritis it is also used to reduce fever and to relieve minor aches and pain due to the common cold or flu ibuprofen is a nonsteroidal anti inflammatory drug nsaid it works by blocking your body is production of certain natural substances that cause inflammation this effect helps to decrease swelling pain or fever if you are treating a chronic condition such as arthritis ask your doctor about non drug treatments andor using other medications to treat your pain check the ingredients on the label even if you have used the product before the manufacturer may have changed the ingredients also products with similar names may contain different ingredients meant for different purposes taking the wrong product could harm you