I did appendix surgery last month,it's been a...

How to treat presence of pus in the incision site

this mean that there is infection in the incision site which should be evaluated by the surgeon where he will give antibiotics like ceftriaxon and may clean the site of infection and may do debridement of the infected tissue

How to diagnose  presence of pus in the incision site

the surgeon should examine the site of infection to assess the extent of infection and sample may be taken from the pus and examined of cultured to detect the cause of infection

what are the causes of presence of pus in the incision site

bacterial infection
weak immunity
absence of daily care of the incision site

what are the symptoms of absence of daily care of the incision site

pain
fever
abdominal pain

advice

you should be assessed by the surgeon to assess the incision site and provide the treatment