59. Itch on Skin
My book on Hair Problems: Causes, Cure and Prevention has all the needed details on this subject.When a mosquito bites us, we develop an itch almost instantly.
The sense of itch should be considered a ‘friendly’ body language that tells us that some venom has been injected into our body, and that if the injected poison is allowed to stagnate within a few cells at one spot, then, (a) such cells and tissues would soon die, (b) because of the differences in concentrations between the poison and the lymph, the transmigration of the venom for its disposal through the process of osmosis will not occur*, and (c) if the concent-rated venom happens to enter into the blood stream, it can keep on destroying even the living components of the blood.
(* In the process of osmosis, the concentrated solution will ‘suck in’ the diluted solution. Since the injected venom tends to be stronger than the blood or lymph fluids, osmosis will not occur. Instead of it, a reverse osmosis may occur, in which case, the blood or lymph fluid will have to flow out and accumulate the poisoned spot, resulting in a ‘water-logged’ condition, similar to oedema.)
In order to overcome all the above possible mishaps, the brain creates an itch there.
By this, it ‘tells’ us by giving us a strong desire to rub or scratch the bitten spot violently, so that the venom would get dispersed into several more adjacent cells, and become diluted and weaker.
A weaker poison will lose its potency, and thereby will become harmless.
See Hair Problems, Scalp Itch, Psoriasis and Eczema.