My mom 54 yr got sudden immense pain in right side of her jaw the lower portion and uper.it gets better with asprin gargles then increases.

Probably TMJ: There are numerous possible causes for this, but the most common is TMJ syndrome. TMJ has many causes and corrective possibilities. We would need much more information and exam to determine how best to stop the problem.

What to do: She likely has a dental problem that can only be diagnosed and treated by a dentist. Aspirin is just a temporary remedy for pain as both of you have already seen. It does not remove the cause, it only masks the pain. She may also have to see a physician to rule out other causes. When were her last dental and medical check-ups?

Jaw pain: This could be TMJ which is inflammation of the joint in the jaw. Clenching at night, stress, grinding teeth can all exacerbate this. Try an antinflammatory and relaxation. Pressure with palpating/pushing on the area just in front of ear on face may cause pain which can be indicative of this diagnosis.