Dermatology: Four Skin Problems

The skin is our largest organ. It represents 10% of our entire body, equivalent to an area of ​​two square meters on average. If it can be a cause of significant concern, Dermatological diseases are numerous and often challenging to diagnose. They can be divided into three broad groups: inflammatory skin diseases, such as urticaria, eczema, psoriasis – chronic conditions that patients learn to treat and seek care mainly in the acute phase -, malignant diseases (cancer), and also infectious diseases. They manifest themselves in different ways on the skin. Following are four skin problems:

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Rash or Rash

These are generalized lesions that appear quickly all over the body, with or without itching. The origin is not a priority. It can be a severe reaction to a drug (this is called drug eruption) or a viral infection reaction – such as measles or rubella – or to a sexually transmitted disease, such as syphilis.

Suspicious Mole

The patient has discovered a mole (nevus), which worries him and makes him fear skin cancer. In this case, the ABCD rule can allow him to assess the dangerousness or not of the nevus by checking four points corresponding to these letters.

A: the nevus is Asymmetric.

B: its Border is irregular.

C: its Color is not uniform.

D: its Diameter exceeds 5 millimeters.

If three of these criteria meet, it forms dysplastic nevus. It can progress to melanoma, the most dangerous skin cancer. The ABCD method is only valid for melanocytes, moles that produce melanin (the color brown or black). If in doubt, see a dermatologist reasonably quickly.


Thirdly, the most common plaque psoriasis sets in gradually. These are red patches called erythematous-scaly patches, made up of large scales arranged on very well-defined patches. Therefore, they are most generally on the elbows, knees, and scalp. In rare cases, psoriasis can spread to the whole skin; this is familiar as erythroderma. It is a reason for urgent consultation.


Finally, there are several types of eczema. Allergic eczema appears in contact with an allergen, such as nickel. The reaction begins at the place of contact and then spreads. Eczema can also result from exposure to irritants, such as disinfectant from the doctor or household products.

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