According to Mayo Clinic, doctors do not know the causes of fibromyalgia, but it is most likely caused by a combination of genetics, illnesses and physical or emotional trauma, such as post-traumatic stress disorder. Web... More » Health Conditions & Diseases

Fibromyalgia can cause chronic pain throughout the muscular system, including the legs, but the most common symptom in the feet is numbness or tingling, notes WebMD. Fatigue, inactivity, tension, weather changes and othe... More »

An elevated creatine phosphokinase or CPK level is indicative of many conditions, but it is not related to fibromyalgia, according to University of Washington Department of Orthopaedics and Sports Medicine. Fibromyalgia ... More »

Although the exact cause of Alzheimer’s disease is unknown as of 2015, researchers believe that it's caused by a combination of age-related changes in the brain, genetics, and lifestyle and environmental factors, reports... More » Health Conditions & Diseases

Traumatic experiences such as accidents, rape, illness, war and childbirth can trigger post-traumatic stress disorder, or PTSD, and manifest as hypervigilance, reliving the event, insomnia, psychological numbing and avoi... More » Health Conditions & Diseases Mental Health

Scientists are not certain what causes attention deficit hyperactivity disorder, but studies suggest that genetics plays a role along with other factors such as nutrition, environmental issues and even brain injuries, ex... More » Health Conditions & Diseases

Potential causes of extreme buttock pain include injuries, accident-related trauma, muscle overuse and diseases such as bone cancer of the pelvis and fibromyalgia. Other conditions that can cause buttock pain include ana... More » Health Pain & Symptoms