Identifying data and reliability shadow health

I’m stuck on a Health & Medical question and need an explanation.

Create a differential diagnosis list based on the information gathered about this case.Identifying Data & Reliability Ms. Jones is a pleasant, 28-year-old obese African American single woman who presents for complete physical examination and evaluation for right foot injury. She is the primary source of the history. Ms. Jones offers information freely and without contradiction. Speech is clear and coherent. She maintains eye contact throughout the interview. General Survey Ms. Jones is alert and oriented, is seated upright on the examination table, and is in no apparent distress. She is well-nourished, well-developed, and dressed appropriately with good hygiene. Chief Complaint “My foot is killing me. It really hurts.” History of Present Illness Ms. Jones reports that two weeks ago she tripped while walking on concrete stairs outside, twisting her right ankle and “scraping” the ball of her foot. She sought care in a local emergency department where she had x-rays that were negative; she was treated with tramadol for pain. She has been cleansing the site when she showers. She has been applying antibiotic ointment with a Band-Aid. She reports that ankle swelling and pain have resolved but that the bottom of the foot is increasingly painful. The pain is described as “throbbing” and “sharp, shooting” with weight bearing. She states her ankle “ached” but is resolved. Pain is rated 5 to 6 out of 10 after a recent dose of tramadol. Pain is rated 9 with weight bearing. She feels she “cannot walk on it.” She reports that over the past two days the ball of the foot has become swollen and increasingly red; yesterday she noted some “blood and pus” oozing from the wound, requiring her to apply a bandage. She denies any odor from the wound. Her shoes feel tight. She has been wearing slip-ons. She reports subjective fevers over the past two days with an episode “just the other day I felt feverish, hot and cold.” She denies recent illness. Reports a 20-pound, unintentional weight loss over the past two months and increased appetite.