Dotage is a term used to describe the mental and physical decline associated with old age. It is often characterized by IMBECILITY, INSANITY, FOOLISHNESS, SENILITY, and second childhood. IMBECILITY is a state of being mentally weak or slow, while INSANITY is a severe mental disorder that affects one's ability to think, feel, and behave normally. FOOLISHNESS is a lack of good sense or judgment, while SENILITY is a condition of mental and physical decline associated with old age. Finally, second childhood is a term used to describe the mental and physical decline associated with old age, similar to dotage.