This chapter presents a part of case history of Felida X written by the French surgeon Etienne Eugene Azam, and published in an academic journal. Case histories were particularly important in the history of early psychology and related scientific disciplines, where knowledge in the field largely developed through close observation and description of those considered to be mentally ill or disabled. The case history is also a sentimental narrative, where Felida is portrayed sympathetically and passively as a product of her condition. The first years of Felida were attended with trial, nevertheless, her development went on regularly. Towards the age of thirteen, a little after puberty, she presented symptoms which denote the beginning of hysteria; viz., various nervous attacks, vague pains, pulmonary hemorrhages, which the condition of the respiratory organs did not explain.