What Disorder Causes You No Appetite

Loss of appetite means that you no longer crave food as you used to. Signs of decreased appetite include unexpected weight loss,not wanting to eat, and not feeling hungry. The thought of eating may make you feel nauseous, just as you may vomit after eating.This can also be called anorexia or loss of appetite. The medical term for this is anorexia.
Various conditions can lead to loss of appetite. They differ between mental and physical illnesses.
If you lose your appetite, you may also experience related symptoms, such as weight loss or malnutrition. They can be serious if left untreated. Therefore, it is important to find and treat the cause of your decreased appetite.
What causes loss of appetite?
Decreased appetite occurs when the desire to eat is reduced. This may also be referred to as anorexia or poor appetite. Medically called this is anorexia.
Various conditions can cause a decrease in appetite. They vary between mental and physical illnesses.
If you lose your appetite, you may also experience related symptoms, such as weight loss or malnutrition. They can be serious if left untreated. Therefore, it is important to find and treat the cause of your decreased appetite.
What Causes Decreased Appetite?
A number of conditions can cause a decrease in appetite. In most cases, your appetite will return to normal after treating the underlying condition or cause.
Bacteria and viruses
Loss of appetite can be caused anywhere by bacteria, viruses, fungi, or other infections.
Here are some of what can be learned:

1. Upper respiratory tract infection
2. lung infection
3. gastroenteritis
4. Colitis
5. skin infection
6. meningitis

After treating the disease properly, your appetite will return.
Psychological reasons
There are several psychological reasons for decreased appetite. Many older people lose their appetite, but experts are not sure why. Anorexia nervosa can also cause malnutrition.
When you feel sad, depressed, sad, or anxious, your appetite may also decrease. Boredom and stress are also related to decreased appetite.
Eating disorders such as anorexia nervosa can also cause a general loss of appetite. A person with anorexia nervosa undergoes fasting or other weight loss methods.
People with this condition are usually underweight and afraid of gaining weight.
Health Status
The following conditions can reduce your appetite:

• chronic liver disease
• Kidney failure
• Heart defects
• hepatitis
• HIV
• dementia
• Hypothyroidism

Cancer can also cause loss of appetite, especially if the cancer is concentrated in the following areas:

• Colon
• stomach
• ovary
• pancreas

Pregnancy can cause loss of appetite even in the first trimester.
Treatment
Some medicines and medications can reduce your appetite. This includes illegal drugs-for example
Cocaine, heroin, and amphetamines—and prescription drugs.

• morphine
• codeine
• certain antibiotics 
• Chemotherapy drugs

Summary

It is important to find out the cause of loss of appetite, because it can cause complications if left untreated.
Loss of appetite is usually accompanied by feelings of weariness or queasiness. If a person is concerned about loss of appetite, they should tell their doctor and mention all other symptoms.
If they notice any unexpected or rapid weight loss, they should also see a doctor.