What happened to Stephen Hawking?

I've always been so fascinated by Stephen Hawking's incredible life and mind, and it's truly awe-inspiring how much he achieved despite the immense challenges he faced. Given his passing, I've found myself wondering more specifically about his medical journey. From what I understand, he had a form of motor neuron disease, often referred to as ALS. I'm really curious, especially in the context of 'medical symptoms', what exactly happened to him from a diagnostic and symptomatic perspective?I know he lived with the condition for an exceptionally long time, which is quite rare. I'm wondering if anyone here has more detailed knowledge about the specific symptoms he experienced, how his condition progressed over the years, and what the typical trajectory for someone with ALS or similar neurodegenerative diseases looks like. What are the early signs, and how do they manifest? How is it diagnosed? It's a condition that truly highlights the fragility and resilience of the human body and mind, and I'd love to learn more from those who might have insights or personal experiences to share about the medical symptoms involved. Thank you for any thoughts or information you can offer.