Hypoglycemia is the medical term for low blood glucose or low blood sugar, which occurs when glucose in the blood drops below levels considered to be normal. There are many food sources of glucose including carbohydrates such as rice, potatoes, bread, tortillas, cereal and other sweets, states the National Diabetes Information Clearinghouse (NDIC). Uncontrolled, hypoglycemia can be a serious, potentially life-threatening, condition. People with hypoglycemia can eventually learn to recognize warning signs of the glucose dropping in their blood. Initially, the symptoms may be less recognizable.
Hunger
Even individuals without diagnosed hypoglycemia can experience a drop in blood sugar when they have not had sufficient nourishment for several hours. Feelings of hunger can be mild or a person may feel ravenous. Irritability can accompany hunger and make a person crave sweets or carbohydrates. These cravings are not medically linked to the condition but, over time, a person may learn that these cravings signal low glucose in their body.
Physical Signs
Weakness, shaking, nervousness or anxiety can signal hypoglycemia. These effects are similar to those people have experienced when they are very hungry. Eating food can improve the feelings within a few minutes. The National Library of Medicine (NLM) indicates some individuals may experience a general feeling of illness (malaise). Other signs include light-headedness or dizziness from the lack of sugar in the blood. The body requires glucose for energy---without it, completing normal tasks can be taxing.
Other Symptoms
Confusion, trouble speaking and sleepiness can signify an abnormal level of glucose. The NDIC points out that crying out, having nightmares or excessive sweating during sleep are some signs of hypoglycemia. Awakening feeling as if you have not slept or are confused signifies a diminished glucose level.
Progressive Signs
Hypoglycemia can differ for every individual. Some progressive signs of the condition can appear as soon as the glucose levels drop or they can appear over time. The NLM identifies these symptoms as rapid heart rate, decreased alertness, different size pupils, hallucinations, pounding heart, memory loss or paleness.
