Skin diseases are very common in the general population. Prevalence surveys have shown that skin disorders may affect 20-30% of the general population at any one time.16 The most common diseases are also the most trivial ones. They include such conditions as mild eczematous lesions, mild to moderate acne, benign tumours and angiomatous lesions. More severe skin disorders which can cause physical disability or even death, are rare or very rare. They include, among others, bullous diseases such as pemphigus, severe pustular and erythrodermic psoriasis, and malignant tumours such as malignant melanoma and lymphoma. The disease frequency may vary according to age, sex and geographical area. In many cases, skin diseases are trivial health problems in comparison with more serious medical conditions. However, as already noted, because skin manifestations are visible they cause greater distress than more serious medical problems. The issue is complicated because many skin disorders are not a "yes or no" phenomenon but occur in a spectrum of severity. The public's perception of what constitutes a
"disease" requiring medical advice may vary according to cultural issues, the social context, resources and time. Minor changes in health policy may have a large impact on health and finance simply because a large number of people may be affected. For example, campaigns conducted to raise public awareness of skin cancer have led to a large increase in the number of people having benign skin conditions such as benign melanocytic naevi evaluated and excised.17
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Complete Guide to Preventing Skin Cancer. We all know enough to fear the name, just as we do the words tumor and malignant. But apart from that, most of us know very little at all about cancer, especially skin cancer in itself. If I were to ask you to tell me about skin cancer right now, what would you say? Apart from the fact that its a cancer on the skin, that is.