A constant sore scalp is not normal and should be looked at by your doctor, to ensure that the sore scalp is not indicative of a underlying serious health condition. Some people keep a sore scalp and label themselves as tender headed and think nothing of it.
These are the four distinct stages in an average house fly's life: Egg: Depending on the size of a female house fly, she can lay up to 500 eggs in a three to four day period. Eggs are white in color and are usually less than half and inch in size. Larvae: Larvae are commonly referred to as maggots. Maggots emerge from the eggs within eight to 20 hours of being laid.
The fly life cycle consists of egg, maggot, pupa and adult. Insect eggs hatch into maggots, or the larval stage, very quickly. Fly maggots usually hatch less than a day after the female lays eggs. Flies lay eggs in batches of 150 or more, producing several such batches in just a couple of days. When it's warm outside, maggots can emerge from eggs laid only eight to 20 hours earlier.