Is it normal to sleep after the HPV vaccine?

After hpv vaccine shows lethargy, generally belongs to the normal phenomenon, considered to be the side effect caused by vaccine, vaccine is attenuated microorganism, after injection will cause the body to show antigen antibody immune microorganism complex reaction, will cause mild fever, dizziness, lethargy or headache uncomfortable performance, belongs to the normal side reaction caused by vaccine. Generally in 24 hours or so, symptoms will gradually reduce disappear, do not need special treatment, it is recommended to rest more, drink more water, to prevent eating spicy food. If the temperature exceeds 38.5 degrees, or is serious drowsiness symptoms, you need to go to the hospital in time to check treatment, see if it is caused by other reasons, to treat the cause.