Sunburn: Acute Effect of Sun Exposure

Sunburn: Acute Effect of Sun Exposure


We know by now that we need to eat the right foods, need to work out, and do stuff that is healthy for us. Because maintaining good health does not happen by accident, it requires work and smart lifestyle choices. But sometimes when we wake up at 6 am to hit the gym before work or shunning the donuts in breakfast, it’s easy to lose sight of for what are we doing all these. So here are some top articles choices that can keep you motivated to lead a healthy lifestyle and keep diseases at bay.

Sunburn: Acute Effect of Sun Exposure

What is sunburn?

Sunburn is painful condition of skin due to acute exposure to direct sunlight, which is caused by UV-B (ultra violet-B rays of sunlight). Skin may become colored and the epidermis part of the sunburned skin may peel off after few days. Generally the ability to tolerate sunlight is directly proportional to the degree of melanin pigmentation of individual skin i.e. the more melanin in skin the better is tolerance of sunlight. Melanin is a complex tyrosine polymer, which is synthesized by specialized epidermal dendritic cells known as melanocytes (present in epidermis or the outer layer of skin) and is packaged into melanosomes that are transferred via dendritic process into keratinocytes, thereby providing photoprotection and also causing dark color of skin. Exposure to sun also can increase the number of melanocytes (known as melanogenesis).

Same degree of exposure to direct sunlight may not produce same effect in different individuals, some individuals get severe sunburn with exposure to direct sun, but some do not get any sunburn at all. The effect of sun exposure depend on the type of skin the individual has. For example blacks do not get any sunburn due to presence of large amount of melanin in their skin.

The following is the skin type and sunburn sensitivity pattern of different individuals with different skin type:

1. Type-I (type of skin) : skin always burns (sunburn) but never tans.

2. Type-II : skin always burns, but sometimes may tan.

3. Type-III : skin sometimes burns and sometimes tans.

4. Type-IV : skin sometimes burns and always tans.

5. Type-V : skin never burns, but sometimes tans.

6. Type-VI : skin never burns but always tans.

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