Hello dear,
The causes of
constipation can be:
1. Any pathology/ sub acute obstruction in the Gastrointestinal tract
2. Irritable bowel syndrome- constipation predominant type.
3. Functional cause- due to decreased gastric motility
4. Inadequate intake of fluids and fiber rich diet.
5. Hormonal & Metabolic causes, etc.
Though symptomatic relief can be obtained by salt water flush or intake of Laxatives, their regular use is not advised.
And as long as the underlying cause is not treated, symptoms will keep recurring.
So, kindly
consult a Gastroenterologist & get a proper physical examination done.
Investigations like
complete blood count,
Ultrasound scan of abdomen,
Colonoscopy & contrast studies will be helpful to rule out any pathological cause for your symptoms.
There is no need to worry, your friend will be fine.
Till then, maintain adequate hydration & proper nutrition status.
Wishing him a good health.
You can ask me any further queries using the below link: http://www.healthcaremagic.com/doctors/dr-polash-sannigrahi/64925
Take care.