Analysis and classification of human skin diseases

Most common skin diseases like skin cancers, leprosy etc are untreated and mostly causes death. Skin cancer has more cure rate if detected and treated early. The basic means of detecting these skin diseases is through visual inspection followed by biopsy and pathological examination. If the physician finds the appearance of lesion doubtful then normally visual inspection method is used for diagnosis but all malignant lesions are not identified through visual inspection. Now, there are no generally accepted tools that physician can use to immediately find the skin disease in the clinic. Most form of visual inspection could help to prevent misdiagnosis of BCC and other types of skin diseases. Previous work suggests that electrical impedance may distinguish skin cancer from other tissue. The electrical impedance of a tissue depends on its structural characteristics as well as its chemical composition. Studies have shown a wide degree of variation in the bio-electric properties between tissue and cells of body. The studies have shown differences in the electrical impedance of the skin as a result of irritation, allergic reaction, location, sex, age and hydration. A clinical study has also shown significant differences between affected skin and normal skin. Such clinical study is known as impedance measurement and based on a comparison of four indexes: magnitude, phase, real part and imaginary part index.