- excessive appetite
Excessive hunger describes an abnormally strong desire or need to eat. This can be normal or related to an underlying medical condition.
What is going on in the body?
Increased hunger is not considered excessive when related to a recent lack of eating. In addition, people who have always had a large appetite are not considered to have excessive hunger. There are many potential causes of an unexpectedly large appetite.
What are the causes and risks of the condition?
There are many possible causes for excessive hunger. These include:
- increased exercise, which can increase the body's food requirements
- growth spurt. Just before or during a period of rapid growth, a person's appetite increases to ensure that the body has enough food to support this growth. This is common in infants and adolescents.
- hormone imbalances. A high level of thyroid hormone, called
hyperthyroidismor a high level of adrenal hormones, called hyperadrenalism, can cause excess hunger. Some women may have this condition due to hormone changes that occur during pregnancyor at certain times during the menstrual cycle.
diabetes. This is a condition that causes increased blood sugar levelswhich trigger increased appetite. depression. This condition often causes a decrease in appetite. However, it can cause excessive hunger in some cases. bulimia nervosa, an eating disorder that most commonly affects young women. This disorder causes short, intense periods of hunger that usually result in eating binges, usually followed by intentional vomiting episodes.
- certain drugs or medications. The use of antihistamines, steroids, marijuana, or large amounts of
alcoholcan cause excess hunger. Withdrawal from cocaine or amphetamine can also cause this condition.
- damage to an area of the brain called the hypothalamus. This is a rare condition.
Other causes are also possible. Sometimes, no cause can be found.
What can be done to prevent the condition?
Prevention is often not possible. Avoiding the drug can prevent cases due to drug abuse. Taking medications as prescribed and
checking blood sugars regularly can prevent some cases due to diabetes.
How is the condition diagnosed?
Sometimes the diagnosis is obvious from the medical history and physical exam. In other cases, further testing is needed, depending on what is suspected. For example, a blood sugar level can be used to detect diabetes. A series of blood tests called thyroid function tests can detect hyperthyroidism. A toxicology screen of the blood or urine can detect illegal drug use. An x-ray test called a cranial CT may be done if brain damage is suspected.
Long Term Effects
What are the long-term effects of the condition?
Some people with excessive hunger may gain weight. Others, such as those with hyperthyroidism, may lose weight in spite of eating more. Other long-effects are related to the cause of the problem. Growth spurts in children and normal and have no long-term effects.
Depression may result in an inability to work or interact with others. It sometimes leads people to commit suicide. Uncontrolled diabetes can cause damage to many organs and can be fatal.
What are the risks to others?
Excessive hunger is not contagious and poses no risks to others.
What are the treatments for the condition?
Treatment is directed at the cause. For example, an individual with
diabetes may use insulin injections or other medications to control blood sugar levels. A person with hyperthyroidism may be treated with medications, surgery, or radioactive therapy.
abuses drugs may need drug rehabilitation. A person with bulimia or depression may be treated with psychotherapy. Medications such as fluoxetine (i.e., Prozac) and sertraline (i.e., Zoloft) may be used as well.
What are the side effects of the treatments?
Side effects depend on the treatments used. For example, medications can cause
allergic reactions, stomach upset or headaches. Specific side effects depend on the medications used. Surgery carries a risk of bleeding and infection.
What happens after treatment for the condition?
Someone experiencing increased hunger due to
pregnancy or a growth spurt needs no further treatment. An individual with diabetes needs lifelong monitoring and treatment. Someone who stops abusing drugs may no longer experience excessive hunger.
How is the condition monitored?
Any changes or response to treatment can be reported to the healthcare provider. Other monitoring is related to the cause. For example, someone with diabetes needs to
check blood sugars levels every day.
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Harrison's Principles of Internal Medicine, 1998, Fauci et al.
Rudolph's Fundamentals of Pediatrics, 1998, Rudolph et al.