Heat can bring quick pain relief.  Apply a warm compress over the painful ear. You can make a warm compress from a washcloth dipped in hot water and wrung out, or from a hot water bottle or heat pack purchased at a pharmacy. Do not make it hot enough to scald the skin. You can keep the compress on your ear as long as you like. You can also try icing it first. Put a bag of ice on the area for 15 minutes. Then place a warm compress on for another 15 minutes. Repeat two to three times. Hold a blow dryer an arm's length from your ear and blow air set to the "warm" or "low" setting into the ear. Do not use the hot or high setting. Good choices include ibuprofen or acetaminophen. Follow all instruction on analgesic packaging. Note that dosing for children is usually dependent on weight. Do not give children under the age of 18 aspirin. Aspirin in children is linked to the rare but devastating Reye's Syndrome, which causes brain and liver damage. If symptoms persist for more than 5 days for adults or more than 2 for children, the earache is in a child is under 8 weeks old, the neck becomes stiff, or if a fever develops, see a doctor immediately. While earaches are common, if left untreated they can become a very serious infection that can lead to other complications.  If the cause of the earache is bacterial, a doctor can prescribe a course of antibiotics to stem the infection and analgesics to mitigate the pain. An untreated ear infection can result in permanent hearing loss, so it's important that you seek treatment if symptoms worsen or persist.

How would you rephrase that briefly using Vietnamese?
Dùng nhiệt làm dịu cơn đau. Dùng thuốc mua tại quầy. Đi khám bác sĩ.