There are many issues and diseases that fall under the area of expertise and responsibility of a dermatologist. However there are many factors that govern what type of specific conditions the general population gets exposed to in a certain part of the world.
Weather is a very important such contributing factor which effects the human body and skin to be specific. If you live in a place which has harsh cold and winters are prolonged with blizzards and snow storms, you could be having different skin related issues from someone who is living in blistering hot weather of the Arabian Peninsula. None the less, a dermatologist deals with all sorts of conditions regardless of the geography and locale. There are many good dermatologist Singapore where the professional has become very popular in recent years.
Dermatologists not only deal with existing skin conditions but also advise patients and the general population about how to prevent common skin conditions by taking preventive measures such as covering the skin to avoid the harsh weather and to use certain products that could help block the UV rays produced by the sun which also contributes to issues such as squamous carcinoma and malignant melanoma. Dermatologists deal with skin infections and allergies as well as issues related to cosmetics and their associated reactions. Certain other conditions such as moles, warts, dermatitis, acne and nail and hair issues are also part of the many problems that are dermatologist deals with on a day to day basis.
Cosmetic surgery is also in part covered under dermatology. Issues related to aging such as wrinkles, face lift, eyelids, Botox and liposuction also make their way to a dermatologists table from time to time. Skin irritation, inflammation or skin burns are also examined and treated by these doctors.