Like any other medical symptom, a sudden drop in body temperature can have many causes, some of which are quite normal. For example, people typically experience a rapid drop in body temperature before sleep, and women experience a drop in temperature each month before menstruation begins.

Your spine is made up of a column of bones stacked on top of each other. Discs provide cushioning between each of these bones. Sometimes discs may bulge -- move out of place -- and put pressure on nerves that exit your spine. Symptoms are specific to the level of the bulge.

Pain from a pinched nerve can make daily activities difficult. Shoulder exercises can decrease pressure on a pinched nerve.

Scientists have attributed the emergence of an important ALS breakthrough in part to the money raised by celebrities being doused with water.

Boils, or skin abscesses, are infections composed of reddened, tender areas on the skin. Often, these boils form a head filled with pus, fluid made from white blood cells, bacteria and proteins. This pus can be drained by a doctor or might spontaneously burst from the abscess.

Most muscle twitches are what doctors describe as “benign” events that require no medical treatment and go away on their own after a short while. Often, stress and anxiety are to blame. However, twitching muscles can sometimes be a symptom of more serious conditions that require prompt medical attention.

Anger can damage the human body. A bout of anger lasting mere seconds can lead to both physical and psychological duress. Hormones rampage through the bloodstream, muscles flex tensely and the mind works overtime. The combination of these unwanted actions can result in a headache.

When the stomach cannot digest food, indigestion occurs. This usually happens due to several different conditions as the digestive liquid is mainly responsible for indigestion.

Headache accompanied by chest pressure is commonly seen as a result of stress or anxiety. In either situation, these psychological or emotional states bring about a wide array of feelings, ranging from frustration and nervousness to anger and fear.

Ah, summertime! Fun in the sun, sleeping at the side of the pool, playing a game of softball . . . and winding up with a huge headache. If you were physically active during the brightest part of the day, or even if you were taking a nap in the sun, your body will respond to all the sun beating down on you.

The nervous system consists of three main nerve types. Sensory nerves supply humans with the ability to see, hear, smell, taste and feel. Motor nerves enable the brain to command the muscles of the body. Autonomic nerves regulate the function of the internal organs.

Auras are visual manifestations of neurological symptoms. Flashing lights are one type of aura people report seeing, and these auras often seem to appear in either the left or the right eye.