Typically for me the signs of a crisis may vary from numbness/ tingling of the lips or lower face, thirst, fatigue and even appetite changes. When I say appetite change I mean just that. For example I DO NOT eat peanut butter and jelly sandwiches but before I went into my last crisis I craved one so much till I had to have it, that night I was in the emergency being admitted. Having these signs is good because it tells me I need to start hydrating more, taking pain medication and keeping an eye out on my blood levels.