However, all skin types can develop sunburn.Fitzpatricks skin phototypes:

Type 0: Albino
Type I: Pale white skin, burns easily, does not tan
Type II: White skin, burns easily, tans with difficulty
Type III: White skin, may burn but tans easily
Type IV: Light brown/olive skin, hardly burns, tans easily
Type V: Brown skin, usually does not burn, tans easily
Type VI: Black skin, very unlikely to burn, becomes darker with UV radiation exposureAge also affects how skin reacts to sun. Children younger than six and adults older than sixty are more sensitive to sunlight.There are certain genetic conditions, for example xeroderma pigmentosum, that increase a persons susceptibility to sunburn and subsequent skin cancers. These conditions involve defects in DNA repair mechanisms which in turn decreases the ability to repair DNA that has been damaged by UV radiation. Medications
The risk of a sunburn can be increased by pharmaceutical products that sensitize users to UV radiation. Certain antibiotics, oral contraceptives, antidepressants, acne medications, and tranquillizers have this effect. UV intensity
The UV Index indicates the risk of getting a sunburn at a given time and location. Contributing factors include:
The time of day. In most locations, the suns rays are strongest between approximately 10 am and 4 pm daylight saving time. Cloud cover. UV is partially blocked by clouds; but even on an overcast day, a significant percentage of the suns damaging UV radiation can pass through clouds. Proximity to reflective surfaces, such as water, sand, concrete, snow, and ice. All of these reflect the suns rays and can cause sunburns. The season of the year.
Umbilical cord compression is the obstruction of blood flow through the umbilical cord secondary to pressure from an external object or misalignment of the cord itself. Cord compression happens in about one in 10 deliveries. Causes
Nuchal cord, when the umbilical cord is (tightly) around the neck of the fetus
Entanglement of the cord
Knot in the cord
Cord prolapse, where the umbilical cord exits the birth canal before the baby, which can cause cord compression. As a complication of oligohydramnios in which there is insufficient amniotic fluid
Compression during uterine contractions in childbirth

Diagnosis
On cardiotocography (CTG), umbilical cord compression can present with variable decelerations in fetal heart rate. Treatment
Umbilical cord compression may be relieved by the mother switching to another position. In persistent severe signs of fetal distress, Cesarean section may be needed. References


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