Solar urticaria: A form of hives that occurs in response to sun exposure. Symptoms usually occur within minutes of the sun exposure. Symptoms usually persist for between half an hour to two hours. More detailed information about the symptoms, causes, and treatments of Solar urticaria is available below. Symptoms of Solar urticaria.
SolarWinds Inc. is a company which develops enterprise information technology (IT) infrastructure management software.
Sunspots/Solar Cycle. Sunspots are dark regions on the Sun. They are regions of intense magnetic field that are intimately associated with solar flares and coronal mass ejections.Sunspots appear dark on the sunâs surface because they are cooler (3700 K) than the rest of the solar surface (6000 K).Sunspots are cooler because their intense magnetic fields inhibit the rise of heat from the solar interior. Sunspots can appear alone, or in close connection to other sunspots.Sunspots that are clearly connected to each other are grouped into active regions with an official number designated by NOAA. Active regions are classified according to their size and complexity with a scale known as the modified Zurich scale.unspots can appear alone, or in close connection to other sunspots. Sunspots that are clearly connected to each other are grouped into active regions with an official number designated by NOAA. Active regions are classified according to their size and complexity with a scale known as the modified Zurich scale.