Final answer:
The proper term for flat discolorations on the skin is macules, not vesicles. Vesicles are small, raised, fluid-filled bumps that can occur with infections like impetigo, which also features pustules and bullae. Melanoma is represented by differently colored, uneven patches, often raised and possibly in unusual locations. Statement is False.
Step-by-step explanation:
The statement that discolorations appearing on the skin's surface, which are flat and usually rounded, are called vesicles is false. The correct term for smooth spots of discoloration on the skin is macules. Vesicles are actually small raised bumps on the skin that are fluid- or pus-filled. An example of a skin condition featuring vesicles is impetigo, which is a suppurative (pus-producing) infection causing vesicles, pustules, or bullae (large blisters) that can rupture, leading to encrusted sores. Another form of skin lesion is the melanoma, which presents as large brown or black patches with uneven borders and a raised surface; these may have specks of different colors or occur in uncommon places like under the fingernails or on mucous membranes.