to it also.) His friend named Ernst began using the drug because of his injured thumb from dissecting a dead body, an action common in his profession. Not only cocaine, but morphine, as well. Freud became so addicted, he began having hallucinations (according those, someone with mental health experience). Sigmund often had fears of dying, other exaggerated phobias, and (even-related to his psychosexual stages of development theory-) had sexual feelings for his mother. He often dove into his discoveries and theories by assessing his own dreams, childhood memories, and personality development.