### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
My boyfriend is a diabetic and his foot has been red, swollen & very painful the last year. The doctors here said it was cellulitis and he was on Bactrim for 8 months. It didnt clear it up. Then they put him on several different creams and  nothing. His sugars have been under control. It is not getting bigger and the area has almost covered his whole foot. They took xrays scans & its not in the bone. He doesnt run a fever. What can this be. It started out looking like a spider bite a year ago

### output:

HIF any wound is not healing for a long time it suggests that the patient needs to monitor the blood sugar much more stringentlyPlease clean the swollen part with the saline solution and apply moist heat gently which will give some relief if there is any wound please clean with the solution and apply provide ointment(in consultation with your doctor)The causes of swollen feet and ankles are numerous; the following is a list of most of the major causes with some examples. Dependent swelling (or edema): swelling due to standing or walking (usually over some time period that varies from person to person)Medications (side effects): Many medications have the side effect of fluid retention that manifests as swelling. Although the reader is advised to check their individual medications for side effects of swelling, general categories that may cause swelling include anti-inflammatory Chat Doctor. InjuryDiseases: heart disease, liver disease, kidney disease (all of these diseases can influence fluid mobilization in the body by physical, metabolic and electrolyte-water interactions)Infection and Lymph edemaPlease also get his HbA1c levels and if it is high see the planetologist immediatelyWishing him Good HealthRegards