Rosacea Pictures

Jun 22 2011 Published by admin under Uncategorized

What is Rosacea?

Rosacea is a very common erythematous, acne-like chronic dermatological condition that affects an estimated 45 million people worldwide.

Still, there is no particular cause that can sufficiently explain the pathogenesis of this disorder. It could be a pattern of genetic predisposition and environmental factors that has caused for it to arise. There is also a link connecting the condition to mites, sun exposure, medications that may cause blood vessel dilation, gastrointestinal diseases and Helicobacter pylori.

The major clinical symptoms of rosacea consist of red patches, development of telangiectases, which are small blood vessels that form just under the skin surface, diffuse facial redness, red cysts, and pink or irritated eyes. These manifestations tend appear, then disappear for weeks, months or even years and then reappear.

It frequently begins with a tendency to go red much more easily than other people do. In time, individuals may see irreversible redness on the face.

Characteristically, the nose can become red and bumpy and develop visible dilated superficial blood vessels. If left untreated, later stages can bring a disfiguring nasal condition called rhinophyma, a condition described by a bulbous, enlarged red nose and puffy cheeks.

Currently, rosacea isn’t regarded as a curable disorder, but it can usually be managed with appropriate, standard treatments. With lasers, intense pulse light, photodynamic therapy and isotretinoin made available, some cases of this condition may be drastically cleared for a long time.

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Contact Dermatitis Pictures

Jun 20 2011 Published by admin under Uncategorized

What is Contact Dermatitis?

Contact dermatitis is a medical term for skin inflammation that results from exposure of the skin to an external chemical or physical substance, which can be an irritant or an allergen.

About 80% of the cases of contact dermatitis are caused by irritants. The inflammatory reaction is attributable to the direct effect of irritant substances like soaps, plants, solvent, latex, cosmetics, food, and detergents on the skin.

The remaining 20% of the cases are accounted to allergic contact dermatitis which is also the most prevalent type of immunotoxicity. In this case, the skin inflammation is caused by a hypersensitivity reaction acting via the interaction of the immune system’s immunoregulatory cytokines and T lymphocyte subpopulations to a specific substance. It begins with the chemical breaking through the skin. It binds to Langerhans’ cells and travel to lymph glands close by. Sensitization ends when the allergen has been introduced to T-lymphocytes which will produce memory cells to remember that specific allergen. A previous exposure to the substance is needed to provoke allergy. Succeeding exposure causes the T-lymphocytes to recognize the allergen and activates them, releasing inflammatory mediators to the site.

Formaldehyde, rubber, fragrances, nickel, topical medications, hair salon chemicals and some plants are the commonest allergens. In this case, there is a delay of the immune response between the first exposure and the consequent reaction.

Another difference between the two types of dermatitis is the extent of inflammation as manifested in the skin surface. Usually, allergic dermatitis is confined to an area where the trigger was actually in contact with the skin while in irritant, the skin inflammation is more widespread.

The common reaction is a red rash which appears immediately in irritant contact dermatitis while the rash brought by allergic contact dermatitis every so often emerges until 1 to 3 days following an allergen contact. Urticaria appears in a pattern where the skin was directly exposed to a trigger and worsens when the area is scratched.

To discard and inactivate most of the displeasing substance, clean the exposed skin with soap and cool water straight away after direct contact to an identified trigger. Lemon juice and vinegar which are weak acids can be applied to neutralize the effects of the chemical substances. Cold moist compresses are done for 30 minutes thrice a day if there is development of blisters. Aside from application of calamine lotion and cool colloidal baths, Diphenhydramine can be taken to relieve itching.

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