Blounts disease is an important differential diagnosis because it causes knee deformities in a similar fashion to rickets namely bow legs or genu varum. Infants with rickets can have bone fractures. This sometimes leads to child abuse allegations. This issue appears to be more common for solely nursing infants of black mothers, in winter in temperate climates, suffering poor nutrition and no vitamin D supplementation. People with darker skin produce less vitamin D than those with lighter skin, for the same amount of sunlight. Treatment
Diet and sunlight
Treatment involves increasing dietary intake of calcium, phosphates and vitamin D. Exposure to ultraviolet B light (most easily obtained when the sun is highest in the sky), cod liver oil, halibut-liver oil, and viosterol are all sources of vitamin D.A sufficient amount of ultraviolet B light in sunlight each day and adequate supplies of calcium and phosphorus in the diet can prevent rickets. Darker-skinned people need to be exposed longer to the ultraviolet rays. The replacement of vitamin D has been proven to correct rickets using these methods of ultraviolet light therapy and medicine.Recommendations are for 400 international units (IU) of vitamin D a day for infants and children. Children who do not get adequate amounts of vitamin D are at increased risk of rickets. Vitamin D is essential for allowing the body to uptake calcium for use in proper bone calcification and maintenance. Supplementation
Sufficient vitamin D levels can also be achieved through dietary supplementation and/or exposure to sunlight.
The ecclesiastical title of archpriest or archpresbyter belongs to certain priests with supervisory duties over a number of parishes. The term is most often used in Eastern Orthodoxy and the Eastern Catholic Churches and may be somewhat analogous to a monsignor, vicar forane or dean in the Latin Church, but in the Eastern churches an archpriest wears an additional vestment and, typically, a pectoral cross, and becomes an archpriest via a liturgical ceremony. The term may be used in the Latin Catholic Church in certain historical titles and may replace in popular usage the title of vicar forane, otherwise often known as a dean. Antiquity
In ancient times, the archdeacon was the head of the deacons of a diocese, as is still the case in the Eastern Orthodox Church, while the archpriest was the chief of the presbyerate of the diocese, i.e. of the priests as a body. The latters  duties included deputising for the bishop in spiritual matters when necessary. Western Christianity
Latin Catholic Church
In the western Church, by the Middle Ages, the use of the title had evolved and became assigned to the priest of the principal parish among several local parishes. This priest had general charge of worship in this archpresbyterate, and the parishioners of the smaller parishes had to attend Sunday Mass and hold baptisms at the principal parish while the subordinate parishes instead held daily mass and homilies.