How long after beginning treatment for cellulitis do the symptoms begin to go away?

Depends: Pain and fever should be over. Swelling may take a few days to weeks to subside. Color changes may take months to return to normal. All these things will take longer if the person is overweight. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. Get HPV vaccine.

Tx cellulitis?: Depends upon the organism causing the cellulitis, the initiation of the treatments, etc. Best to see in person an infectious disease doctor.