1 The highest monthly average temperature in Lake Las Vegas for July is 95 degrees. 2  The lowest monthly average temperature in Lake Las Vegas for December is 44 degrees.  The most monthly precipitation in Lake Las Vegas occurs in October with 0.5 inches.
Phototoxicity, also called photoirritation, is a chemically induced skin irritation, requiring light, that does not involve the immune system.It is a type of photosensitivity.hototoxicity, also called photoirritation, is a chemically induced skin irritation, requiring light, that does not involve the immune system.
Drugs that cause phototoxic reactions include: 1  Phenothiazines, such as chlorpromazine (which can be used in the treatment of psychoses such as schizophrenia or bipolar disorder) and promethazine (which is an antihistamine with sedative effects).rugs that cause phototoxic reactions include: 1  Phenothiazines, such as chlorpromazine (which can be used in the treatment of psychoses such as schizophrenia or bipolar disorder) and promethazine (which is an antihistamine with sedative effects).