 [ Symptoms ] at age 65 does primary insurance switch to medicare  turned 65 in july 2013 covered under spouse is company insurance spouse lost job in sept 2013 and we were covered by cobra however her insurance company states that since she is not an active employee my primary insurance is now medicare and cobra will cover what medicare does not [ Disease ] the allergy tests should have no lethargic effect on your child but the emotional experience of the uncomfortable skin tests can certainly wear her out a bit i suspect she will be fine in another day if she is taking any antihistamines this can make her tired too