There is no definitive evidence to suggest that Pablo Picasso had any diagnosed mental illnesses. However, there have been various speculations and interpretations about his personality and behavior based on historical accounts and analysis of his artwork.
Picasso's artistic career spanned many decades, during which he went through different artistic periods, including the Blue Period, Rose Period, and Cubism, among others. Some art historians and psychologists have interpreted certain phases of his work as indicative of emotional turmoil or psychological struggles. For example, during his Blue Period, his paintings were dominated by blue and melancholic themes, which led some to speculate about his mental state during that time.
Moreover, Picasso was known for his eccentricities, complex relationships, and occasional erratic behavior, which may have contributed to some assumptions about his mental health. Still, it's important to remember that attributing mental illnesses to historical figures without proper clinical evidence can be speculative and should be approached with caution.
Ultimately, the nature of Picasso's personality and the potential presence of any mental illnesses remain topics of debate among art historians, psychologists, and biographers. Regardless of any speculations, his artistic contributions have had a profound impact on the world of art and continue to be revered to this day.