My father, who just turned 70, had a health experience tonight that he has never had before. Around 10 pm, he started to incur symptoms that included excessive sweating, shaking, and shivering. He felt very unwell for a period of a few hours, but, after taking a shower, they started to subside. He just went to bed about 2:45 am, feeling that most of the symptoms had passed. Now, I am my father's son, so I can testify to the fact that he is someone who worries a lot and likely often causes his own stress to rise. He rises early for work at 6am, travels about 90 minutes to his job, and then works til about 5 pm, then gets home about 7 pm. I know that he doesn't exercise, and its likely that his daily diet is not optimal (he doesnt eat breakfast, consumes a light lunch, and though he always eats dinner, it may not always be an ideal'healthy dinner.' Once again, I stress the fact that he is someone who doesnt think of himself much, but is always concerned about his family and their well being. Tonight I arrived home at 2:30 am, and he was up, and told me about his experience. He was relaxed by this point and not shaking, shivering, or sweating. I immediately felt personally guilty, because on some nights he will just be worried if I arrive home late. However, he has never described, or, as far as I know, ever had a health experience like this one. Again, it was at least and hour or two of sweating, shivering, and shaking (and I know that he was being completely open and honest in telling me about it, for he will rarely ever want anyone to concern themselves with his health). Indeed, he was adamant on telling me about it when I got home. Now, I believe that my dad likely had some type of anxiety attack, which was likely greatly spurred by his lack of focus on a good diet, exercise, water, etc.... I would like, however, to ask a doctor's opinion. Thank you! - Scott