¿Por que nos da comezón?

The video explores the biological and psychological aspects of itching, detailing how histamine and nerves are involved in the sensation. It discusses the evolutionary origins of itching, its role in protecting against parasites, and recent research findings. The video also covers various causes of itching, including allergies and viruses, and examines the psychological aspects, such as contagious itching and its mental triggers.

What role does histamine play in the sensation of itching?

How does the thalamus contribute to the sensation of itching?

What evolutionary advantages does itching provide according to the text?

Describe the difference between pain and itching as mentioned in the text.

What are some reasons for itching that are not related to external irritants?

What is the significance of the suprachiasmatic nucleus in relation to itching?

How does scratching provide a sense of pleasure according to the text?