A patient presents to the emergency department complaining of headache behind her left eye and redness of the left eyelid.
A woman with a history of osteoarthritis presents with bilateral knee pain.
A man presents with knee pain and swelling 3 months after undergoing knee replacement.
A woman presents with gradually worsening, generalized abdominal pain that originated in the right lower quadrant.
A man presents with right elbow pain after he fell 2 days ago.
A woman presents with shoulder pain from an injury sustained after falling off her bicycle.