A number on a scale for rating the degree of protection provided by sunscreens. SPF stands for Sun Protection Factor.
SPF numbers on a package can range from as low as 2 to as high as 100. These numbers refer to the product’s ability to screen or block out the sun’s burning rays. It is a common mistake to assume that the duration of effectiveness of a sunscreen can be calculated simply by multiplying the SPF by the length of time it takes for him or her to suffer a burn without sunscreen, because the amount of sun exposure a person receives is dependent upon more than just the length of time spent in the sun. The amount of sun exposure depends upon a number of factors including the length of exposure, time of day, geographic location, and weather conditions.
- Sun poisoning
1. A nonscientific term sometimes used to refer to the serious and even potentially fatal symptoms of severe sunburn and accompanying dehydration. When used in this sense, sun poisoning is a medical emergency. Symptoms of sun poisoning include fever and chills, nausea, rapid heartbeat, rapid breathing, and possibly shock with loss of consciousness. 2. Sunburn […]
- Syndrome, Alagille
Also known as arteriohepatic dysplasia, this is a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face. Children with Alagille syndrome usually present with jaundice (yellowing of the skin and whites of the eyes) in the newborn period. Stagnant flow of bile from the liver […]
- Syndrome, androgen insensitivity
Also known as complete androgen insensitivity syndrome. This is a genetic disorder that makes XY fetuses insensitive (unresponsive) to androgens (male hormones). Instead, they are born looking externally like normal girls. Internally, there is a short blind-pouch vagina and no uterus, fallopian tubes or ovaries. There are testes in the abdomen or the inguinal canal. […]
- Syndrome, antiphospholipid antibody
An immune disorder characterized by the presence of abnormal antibodies in the blood associated with abnormal blood clotting, migraine headaches, recurrent pregnancy losses (repeat spontaneous abortions), and low blood platelet counts (thrombocytopenia). The abnormal antibodies are directed against phospholipids. (Phospholipids are fats that contains phosphorous). APLS can occur by itself (primary) or be caused by […]
- Syndrome, Apert (acrocephalosyndactyly)
An inherited disorder with abnormalities of the skull and face and the hands and feet. There is premature closure of the sutures of the skull (craniosynostosis). This results in an abnormal head shape, which is unusually tall but short from front to back, and an abnormally shaped face with shallow eye sockets and underdevelopment of […]