Harvard Health Content API

Is “killed virus” the same as an inactive virus in vaccines?

I donate plasma and I was recently deferred because along with my protein my “alpha 2 level” is high. What does this mean?

I have identical twin girls that are 2 1/2 years old. One of my daughters tends to twist her hair quite often lately. She has been doing this for several months. She twists it into knots and it has gotten so bad that she has very thin hair on the crown of her head. Is there anything I can do to help her stop this? She mainly does this at naptime, bedtime and at down times during the day, such as when she is watching a TV show.

I have neck pain due to cervical spinal stenosis. Is surgery recommended as the first treatment option, or is there an alternative, e.g., medication, to relieve pain and correct the condition?

Is an auditory brainstem response test a usual thing to have done for hearing loss?

What causes high blood pressure in a 4-year-old?