Sandfly fever can refer to:

Visceral leishmaniasis, or kala-azar
Pappataci fever, or Papatasi fever, an acute febrile arboviral infection (most commonly referred to if not otherwise specified)
Syndactyly is a condition wherein two or more digits are fused together. It occurs normally in some mammals, such as the siamang and diprotodontia, but is an unusual condition in humans. The term is from Greek σύν, syn together and δάκτυλος, daktulos finger. Classification
Syndactyly can be simple or complex. In simple syndactyly, adjacent fingers or toes are joined by soft tissue. In complex syndactyly, the bones of adjacent digits are fused. The kangaroo exhibits complex syndactyly.Syndactyly can be complete or incomplete. In complete syndactyly, the skin is joined all the way to the tip of the involved digits. In incomplete syndactyly, the skin is only joined part of the distance to the tip of the involved digits.Complex syndactyly occurs as part of a syndrome (such as Apert syndrome) and typically involves more digits than simple syndactyly. Fenestrated syndactyly, also known as acrosyndactyly or terminal syndactyly, means the skin is joined for most of the digit but in a proximal area there are gaps in the syndactyly with normal skin. This type of syndactyly is found in amniotic band syndrome. Simple syndactyly can be full or partial, and is present at birth (congenital). In early human fetal development, webbing (syndactyly) of the toes and fingers is normal. At about 6 weeks of gestation, apoptosis takes place due to a protein named sonic hedgehog, also known as SHH, which dissolves the tissue between the fingers and toes, and the webbing disappears.