Disease Information for Familial Vitamin D dependent Rickets (Clinical Manifestations)
Active rickets, Active rickets (disorder), Rickets active, VDDR, VDDRI Vit D dependnt rickets, VDDRI Vitamin D dependent rickets, Vitamin D dependent rickets, Vitamin D dependent rickets (disorder)
Vitamin D dependent rickets; Normo-phosphatemic hereditary disorder; Not sexlinked; type I below: ------------------------HEREDITARY VITAMIN D-DEPENDENT RICKETS <br>
Type I (pseudo-vitamin D deficiency) is an autosomal recessive syndrome, characterized by severe rickets, normal 25(OH)D3 and subnormal 1,25(OH)2D3 plasma levels, low or normal serum calcium, hypophosphatemia, and generalized aminoaciduria; This disorder results from absent or defective 1 -hydroxylase in the kidneys and responds to physiologic quantities of 1,25(OH)2D3 (1 to 2 µg/day) IV or po; Type II exists in several forms and is due to mutations in the 1,25(OH)2D3 receptor; This receptor, which is a transcription factor for 1,25(OH)2D3, causes expression of a variety of genes that control the metabolism of gut, kidney, bone, and other cells; The lack of a functional receptor produces a high but ineffective level of 1,25(OH)2D3; Some patients respond to very high doses of 1,25(OH)2D3 (10 to 40 µg/day); others do not respond at all-----------[Merck Manual 17th]--------------------------
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Clinical Manifestations
- Signs & Symptoms
- Frontal bossing signs/facial
- Fingernails brittle/thinner/splitting
- Stunted growth
- Malnourished/poor nutrition status/signs
- Weight loss in Children
- Acute bilateral Hand muscle spasms
- Cramping in Extremities
- Muscle weakness
- Proximal muscle weakness
- Proximal symmetrical muscle weakness
- Thigh pain
- Sleep disturbance
- Costochondral tenderness
- Rib tenderness
- Anterior bowing thickened tibia bone/shin/sign
- Bone Pains
- Bossing forehead,infants
- Bowing of extremities
- Bowlegged/Genu varus
- Clavicle bony swelling
- Costochondral beading/rickets sign
- Craniotabes sign/Ping-pong feel to skull
- Legs/anterior bowing
- Macrocephaly/Large head
- Rachitic rosary sign
- Saber shins deformity
- Skeletal problems/symptoms/signs
- Sternal swelling
- Sternal tenderness
- Tender/bones (long bones)
- Upper back skeletal deformity/signs
- Short stature
- Short stature Child
- Sweating about head/newborn
- Weakness
- Weight loss
- Disease Progression
- Course/Chronic disorder
- Course/Chronic only
- Signs & Symptoms
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