Others might disagree, but I thought Hillary looked fine at the inauguration. And did at other times during the campaign, such as the last debate. So the question of whatever is clearly wrong with her health is all the more popular puzzlng to me.
Should have been “all the more puzzling.”
Hillary's people carefully manage her public appearances. She requires several days of rest and reduced dosages of her normalizing medications to prepare for any major public appearance.
On the day of the planned event, she is given a strong enough dose of her normalizing medicine to see her through a few hours. During that time, she can appear completely normal, such as at the debates, or on inauguration day.
The reason she had so many episodes of infirmity during the campaign, is that they pushed the envelope too hard, and her body couldn't handle it.
This is why she failed to campaign hard in areas where she desperately needed to, during the critical final weeks of the race. It would have probably killed her to do so, which is why you saw her surrogates campaigning for her.
She truly is very sick, but she and her people are good at hiding it.