What does the abbreviation 'C/o' stand for in medical terminology?

The abbreviation 'C/o' in medical terminology stands for "complains of." This phrase is commonly used in clinical settings to document a patient's symptoms or concerns during evaluations. When noting 'C/o' in a patient’s chart or report, it indicates the specific issues or discomfort the patient is experiencing, allowing healthcare professionals to quickly assess and address the patient’s needs effectively. For example, if a patient states they are experiencing chest pain, the physician might write "C/o chest pain" to succinctly summarize the patient's complaint. This abbreviation is helpful in conveying important information efficiently within medical documentation.