Aching hips can be caused by conditions such as arthritis, cancer or a pinched nerve, as stated by Mayo Clinic. Dislocation, tendinitis and rickets are additional causes.
Since hip pain has so many possibly causes, some of which can be serious, the person experiencing the pain should contact a doctor if the pain lasts for more than a few days. As a person ages, the cartilage in the hips can break down, making the area more prone to injuries, according to WebMD. The treatment for a hip ache depends on the cause. For minor problems, over-the-counter pain relievers may help.