Hi doctor One of my friends have swelling after...

Rectal swelling causes and treatment 
Rectal and sphincter injury after anal intercourse are among the most propable causes of any evolving lesion, In case of presence of pinkish tissue comming out especially with defection then its rectal prolapse that should be treated surgically to avoid stool incontennce, On the other hand, anal hemorrhoids are other differntial of small multiple (3) anal swellings on coming out with defecation and return till grade 4 where they get out side perminantly, You should consult a surgeon to detect the cause and define the treatment 
Investigations 
Rectal examination will be sufficient to diagnose the anal problem, in addition to examination using anoscope and colonoscope 
Causes 

• Rectal proplase 
• Anal hemorrhoids 
• Anal cancer 

Our advice 
You are adviced to avoid constipation, avoid anal intercourse and have regular exercise and healthy diet