Reason For Skin Allergy?
Welcome to healthcare magic.
There are many causes of allergy.
Some allergic reaction manifest as skin problem (multiple swelling with various shape & size, increased temperature, itching etc.)
Allergic reaction may also manifest with other way.
There are some mechanisms in our body for manifestations of skin allergy.
Sometimes our body system recognize some substance as allergen(eg-some food, drug etc).
As a result, IgE mediated activation of the mast cell & basophil occurs.
Then they secrete some substances (cytokine,chemokine etc) which play main role in allergic manifestation.
Complement pathway may also be activated.
With the secretion & activation of these substances they causes skin manifestation as multiple swelling,itching,rash,increased temperature.
These are the basic mechanism.
One substance may act as allergen to one but not to all.
It differs from man to man.
The best preventive measure is to avoid the offending agent.
I hope I have been some help of your query.
Please write if you have another query.
Take care.
my body get over heated,at the time itching and my hairs are fall down, how can i prevent this
I hope you are well enough.
The best preventive measure of an allergic attack is avoidance of the offending agent.
You must try to figure out the substance which causes your skin allergy.
In case of severe attack antihistamine like Atarax (prescribed by doctor) helps.
Take care.