Which sensations can arise when free nerve endings in the skin are stimulated?

Explanation

### Step-by-Step Solution:

1. **Understanding Free Nerve Endings**: Free nerve endings are sensory receptors located in the skin and other tissues. They are responsible for detecting various types of stimuli.

2. **Types of Sensations**: When these free nerve endings are stimulated, they can lead to the perception of different sensations. The main types of sensations that arise from the stimulation of free nerve endings include:
- **Pain**: This sensation arises from nociceptive stimuli, which are signals indicating potential harm or injury to the body.
- **Thermal Sensations**: These sensations relate to the perception of temperature, allowing us to feel heat or cold.
- **Tickle**: This sensation can occur when certain areas of the skin are lightly touched or stimulated.
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