Recurrent patella dislocation?

how do i know if my patella is dislocated?
wad are the symptoms?

What you may have is something called Patellofemoral Syndrome. I have it. Basically, the kneecap doesn't sit prop[erly in the grooves of the knee and there is not enough muscle on the inside of the leg to keep the kneecap in place; therefore the kneecap can randomly pop out of place if your trip or something similar. You should see an orthopedist. They treated mine with pain medication and physical therapy, but if it's severe the tendons in your knee may need to be tightened surgically.

this is pretty uncommon.
you'd be in alot of pain when you bend/flex your knee. this would be a nasty injury. See a doctor.

Quads are usually the main muscles related to knees
Pain can be referred from places other than the head. This deals with headaches but the principle works for all kinds of pain.
Muscles get knots called trigger points. These make the muscles tight causing them to press on nerves and other thing.
#1 The first thing is to take a couple swigs of molasses or eat a couple of bananas. They contain magnisium and potassium both of which muscles need.
#2 WATER she should be drinking 1/2 gallon minimum. The head of neurology at UCDavis likens a body running low on water to a car running low on oil (the engine can seize).
Get a good (deep tissue) massage (to loosen the trigger points) on the back, shoulders and neck. Make sure to press up at the base of the skull where it meets the spine.
You rub or lightly scratch everywhere on your head. You will hit spots that are tender these are trigger points. The idea is to rub across them 6-12 times per session up to six times per day until they go away.
For more information on trigger points read The Trigger Point Therapy Workbook by Davies.