My DS is 11 months and has never been a good sleeper but for the last week has become truly dreadful. He has started waking up several times a night really howling and wailing, and throwing himself backwards out of my arms if I pick him up. He takes a good 1-2 hours to resettle (!) and that's followed by low-level moaning and occasional crying in his sleep for at least an hour, followed by another howling wake up not long after.
I thought it was teething (although no sign of any new teeth) and have been giving Calprofen, but now I'm wondering if it could be related to separation anxiety as he has just started his settling in sessions at nursery. He's been checked for ear infections, and doesn't seem to be in any pain during the day, so I really am at a loss. We're all desperately sleep-deprived - on Wednesday none of of us really got to sleep before 5.30am and last night wasn't much better.
Does anyone have experience of separation anxiety causing sleep problems? Or any other suggestions of what might be wrong?