Slower acting forms of response by the immune system occur because the population of cells that react against the invading substance or organism (allergen) needs to be built up from a small number of ‘memory’ cells that recognise the allergen.
Two or three days these cells give rise to others that in turn switch on other defence mechanisms such as the release of chemicals that attract the scavenger cells of the immune system. Because of the lag between initial contact and subsequent reaction, this is called ‘delayed hypersensitivity’. The skin reactions underlying allergic contact eczema are of this type.
Some of the materials known to potentially cause skin reactions are themselves components of common treatments for eczema (eg lanolin in moisturisers and hydrocortisone in steroid creams). Therefore if the condition is worsening or proving resistant to treatment, the possibility that the treatment itself is contributing to the skin problem should be stop immediately.
Actions of contact allergic eczema
When allergic contact eczema is suspected, it can therefore be important to remember where it first started when taking the medical history behind the development of a rash finding the cause.
Sometimes the cause and effect relationship is obvious, with a red scaly reaction around an earring or under a watch strap. At other times, especially if a long time has passed since the initial exposure and sensitisation, it can be impossible to identified contact allergic from other types of eczema.
It may also be difficulties distinguishing allergic contact eczema (which is an immune response) from irritant eczema (which is a direct skin reaction against an irritant substance). In practice, this difference is not so important because the same lines of treatment are required for both.
If spring brings a stuffy nose, scratchy eyes and an extra sneeze tacked on to your usual "achoo!" — you probably have hay fever (allergic rhinitis). Hay fever is the common name for an allergic response to specific substances in your environment. Hay fever is one of the most common allergic conditions, affecting about 40 million people in the United States.
If you have seasonal hay fever, tree pollen, grasses or weeds may trigger your symptoms. If you're sensitive to indoor allergens such as dust mites, cockroaches, mold or pet dander, you may have year-round symptoms.
Over-the-counter medications may be enough to manage your mild hay fever symptoms. But if your signs and symptoms are more severe — or if hay fever is a year-round nuisance — see an allergy specialist for evaluation and treatment. Without proper treatment, hay fever can impair your quality of life, cause sleeplessness, fatigue and irritability that affect your performance at work or school, and increase your risk of developing more serious allergic conditions such as asthma or eczema.
Perennial allergic rhinitis is a similar allergy that occurs all year round and is caused by things such as house dust, mites and pets. However the predominant allergen changes from time to time.
: Frequent sneezing is characteristic of hay fever.
Different microscopic substances get into the nose and cause the body to produce antibodies and release histamine.
Histamine irritates the upper respiratory passages, making them swell and producing the typical hay fever symptoms.
A tendency to suffer allergies is often hereditary. The most common causes of hay fever are:
SymptomItchy and watery eyes
Frequent sneezing, runny nose
Itching on the roof of the mouth
Wheezing or a burning sensation in the throat.
Cause hay feverThe pollen to which you are allergic.
Genetic predisposition associated with other atopic diseases, eg eczema or asthma.
Chinese Master's herbal medication has provern to be very effective to cure Hay Fever, the course usaually takes 4 weeks, you may need one or more course to take away all the problems and inconvience .
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Hepatic tumors are tumors or growths on or in the liver (medical terms pertaining to the liver often start in hepato- or hepatic from the Greek word for liver, hepar). These growths can be benign or malignant (cancerous).
Acupuncture & Herbal Medical Treatment For Allergy Herbs