write a study guide including the Definition, etiology, Occurrence/epidemiology, Clinical presentation, Diagnostic examination, Differential diagnosis, Non-pharmacological and pharmacological management and follow -up 

The study guide is to be clear and concise and will provide a quick reference for a specific chronic disease.
Include your resources and guidelines used for the elaboration of the study guide.
will lose points for improper grammar, punctuation, misspelling, and references should be current (published within the last five years).

GuideforaSelectedChronicConditionTemplate.docx

Intussusception

What is it?

Intussusception occurs when a portion of the intestine folds like a telescope, with one segment slipping inside another segment. It can occur anywhere in the intestines. This causes an obstruction, preventing the passage of food that is being digested through the intestine.

Etiology

The cause of intussusception is not known. Though rare, an increased incidence of developing intussusception may be seen in children:
· Who have abdominal or intestinal tumors or masses
· Who have appendicitis

Occurrence/Epidemiology

Children less than 3 years old, can also occur in older children, teenagers, and adults.
· Intussusception occurs more often in boys than girls.

Clinical Presentation 
(subjective and physical examination)

Subjective: Pain, Sudden loud crying, Straining, Draw knees up, Irritable.

Objective: red mucus or jelly like stool, fever, lethargic, vomiting bile, diarrhea, sweating, dehydration, abdominal distention or lump.

Diagnostic Testing

X-Ray: may demonstrate an elongated soft tissue mass with a bowel obstruction proximal to it.

Ultrasound: ‘Target Sign’
also known as the doughnut sign or bull’s eye sign. appearance is generated by concentric alternating echogenic and hypoechogenic bands.

Upper