this is most likely age-related behavioral cause. i have no way of blindly determining if his issues are related to an underlying medical problem since i don't know anything about him nor can i examine him in a clinical setting. there are many behavior pathways that you can exercise but if you feel there may be a medical problem then by all means see the pediatrician. this will resolve in time so be patient. you will be able to find plenty of on-line and bookstore resources that can help you with these sleep issues.
are my 20 month old's bedtime issues behavioral or medical? . - recently moved. - sleeps in toddler bed. - no bottle since about 14 mos. - been down to 1 nap (2 hrs) for several months takes it regularly and with no trouble at daycare. - bedtime routine good but not completely consistent. problem: doesn't like bedtime in general but has been manageable until twice this week has settled down in bed but then when almost asleep started screaming uncontrollably flailing inconsolable for 10-15 minutes almost like night terrors but not actually asleep yet?