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Autism is often diagnosed in early childhood, but many adults are being evaluated and diagnosed as well. Two autism experts discuss why autism sometimes goes undiagnosed and the impact that can have.

An eye doctor explains how to safely look at the sun during a solar eclipse, and protect your eyes from the sun all year round.

Sometimes, the cause of an itch is beyond skin-deep. Blair Jenkins, MD, PhD, studies how the nervous system can be at the root of chronic itch, or neuropathic itch.

The number of American seniors who are living alone is increasing drastically. We sat down with Mark Nathanson, MD, a geriatric psychiatrist at Columbia, for tips on setting seniors up for success.