Hot water bottle relieves pain of abdominal spasm by
The gate control theory of pain asses that non-painful input closes the nerve "gates" to painful input, which prevents pain sensation from traveling to the central nervous system. Gate Control Theory of Pain describes how non-painful sensations can override and reduce painful sensations Ref: guyton and hall textbook of medical physiology 12 edition page number:559,560,561
Stimulation of touch receptors
Stimulation of cholinergic fibers
Inhibition of cold receptors
Inhibitionof heat receptors
Nervous system