Health care: Allergy-"CONTACT DERMATITIS"

In previous blog I tried to discuss on allergy which in medical term called Type I allergy that is mediated by a chemical, immunoglobulin (IgE) produced plasma cells in our body by the help of TH2 cells. But there are other types of allergy also. Most important of them is type IV which can be prevented by the people themselves. The disease caused by this type of allergy is mostly called 'contact dermatitis'. The very name suggests the cause. It is manifested by chronic eczematous lesion with intense itching in skin of hands or foots or any site of body that remain contact with abnoxious materials for prolong period. Pic: Contact dermatitis with rubber It is usually due to contact of our skin to many substance like cosmetics, many metals commonly nickel in watch belt or eye glass frame, plastics, rubber, different dyes specially hair dye, dye used in cloths, spray as aerosol etc. Even some sorts of light can also be harm full specially for eye causing chronic watering or itching which decrease upon exposure to day light after coming from the indoor. Here is a case report of watering from eyes of a boy of 12 years. The boy was suffering from watering and itching of both eyes for the last 2 years. Ophthalmologist prescribed him symptomatic treatment with local steroids and antihistamines but problem persisted when drugs discontinued. The family was known to me from the childhood of the boy when there was no ocular problem. During taking history I observed that the onset of the disease coincide with their changing of residence in their new house 2 years before and the patient admitted that his symptoms aggravated when he stayed at home and decreased when he became out his house. So, I became assure that the allergic agent was in side his house. I advised him to change his bed to another room when he felt better than when he was in his old room and advised him to shift his used materials from his old room to new place gradually in 2 to 3 days. Ultimately the culprit was identified that it was his table cloth which was a plastic oil cloth of bright yellowish green colour. As soon as it was removed his room he got cured from the symptoms. It is important that, any affected person who acquired the disease for the last few weeks or months, should think first of any articles including new bed seat, pillow cover or other dress or any household objects those have being used for last few months or period which coincide with the onset of his or her disease.

Pic: Plastic contact dermatitis watch belt It should also be noted that, contact dermatitis is acquired several days to few weeks after contact with the offending materials. So it is clear, that living in a artificial environment using mostly artificial materials favours allergy like contact dermatitis. Hair dyes are most dangerous and recently most (about 22) ingredients been banned by European union as they have been found to be related with bladder cancer. Body aerosols have been found to be related with breast cancer. Light colour is good and best colour is white. It is cool for all. Other webs http://www.rangpurmedical.webs.com/ http://www.drmujib.webs.com/

Health care: Allergy- how can we prevent it

google10f0934a5965041e.html Allergy is called in medical term, hypersensitivity. We are exposed day to day to many substances like chemicals in the form of cosmetic, household paints, essences or colour materials in our foods or drinks, artificial leather in our shoes, plastic materials used in different objects including toys, plastic or metal belt in watch and so many foreign ( not present in our body)materials which are needed in daily life and different organisms including bacteria, viruses, fungus or parasites. Allergy most commonly affect the nose, eyes, skin, and lungs. These disorders include atopic dermatitis, contact dermatitis, urticaria Different people show allergy to different substances. One person reacts to a particular substance whether other person do not show any reaction to the same substance. Few people in a particular family may show allergy, these are called atopic person.

Etiology :

Genetic and environmental are important factors.

Genetic factors may be involved, as suggested by familial inheritance of disease.

Environmental factors are thought to be very important. It is proved that allergy is more common in developed countries than developing countries and similarly more common in urban area than rural area. In medical science it is proved that, there are cells ( called TH2 ) in our blood responsible for development a situation during childhood that will develop allergy in later life. Early childhood exposure to bacterial and viral infections and endotoxins (eg, lipopolysaccharide) can control these cells in our blood involved in allergy by suppressing them. But trends in developed countries toward smaller families with fewer children, cleaner indoor environments, and early use of vaccinations and antibiotics may deprive children of exposure to infectious agents that fail to suppress the cells related with allergy. Such trends may explain the increased prevalence of some allergic disorders in developed countries or in urban areas of developing countries. Other factors thought to contribute to allergy development include chronic allergen exposure and sensitization, diet, and environmental pollutants. So, growing up of children in natural environment rather than a more restricted way will prevent allergy significantly.