What condition is characterized by little or no sense of touch?

The correct answer is characterized by a loss of the ability to feel pain or other sensory stimuli, specifically touch. Analgesia can manifest as a diminished or absent ability to feel sensations, which includes the inability to experience a sense of touch. This condition may occur in certain medical situations or from nerve damage.

Ageusia, on the other hand, refers specifically to the loss of taste, not touch. Edema involves swelling caused by excess fluid trapped in the body's tissues and does not relate to sensory loss. The option stating that there is no such condition is inaccurate, as analgesia clearly indicates a specific sensory impairment. Therefore, the answer reflects an understanding of how analgesia can diminish the sense of touch among other sensory modalities.