NEET PG DENTAL EXAM

Detailed explanation-1: -A person’s skin cells produce extra melanin to protect the skin from sun damage. This is why freckles tend to appear after sun exposure. Freckles can appear over a large area of skin and can reappear or become darker in the summer months.

Detailed explanation-2: -Some people make an excess of melanin. This is known as hyperpigmentation, and it’s harmless. People who make too much melanin usually have patches of skin that become darker than the surrounding skin.

Detailed explanation-3: -Freckles are clusters of concentrated melaninized cells which are most easily visible on people with a fair complexion.

Detailed explanation-4: -Darker skin has an epidermal melanin volume fraction of about twice that of lighter skins (6). Due to melanin absorption, less laser light reaches the deeper parts of the skin in dark skin types (1).