Muscles, bones, and joints. It also affects the ligaments and tendons. This pain can happen from injuries or muscle strain. Health problems like osteoarthritis, rheumatoid arthritis, and fibromyalgia also can cause it.
Nerves and the nervous system. This type of pain happens because of pressure on nerves or damage to them from an injury or a health problem. Sometimes pain occurs when something goes wrong with the central nervous system. Diabetes, shingles, and sciatica are examples of health problems that cause nerve pain.
Organs. Pain in your organs occurs because of injuries, infections, or health problems such as cancer, inflammatory bowel disease, irritable bowel syndrome, pelvic pain, and stomach ulcers.
Pain can feel sharp or dull. It may throb or burn. It may be in one part of your body, such as with a headache or a stomach ulcer. Or you may feel pain all over, like when your muscles ache from intense exercise or the flu.
Some pain may be so mild that you can ignore it until it goes away. But other pain may be so bad that you can’t do your daily activities without medicine or other treatment.