The location of the nucleus can vary, depending on the type of the cell. The usual location of the nucleus is at the centre (animal cells), but it can also be at the periphery (plant cells). The reason for that is the vacuole that takes the central position in the plant cell.
A. Itching can be caused by many conditions. A common cause of itch is psychological, that is, due to stress, anxiety, etc. Stress also can aggravate itch from other causes.Dry skin (xerosis) is another frequent cause of itch. Many people also report sunburn itch following prolonged exposure to UV radiation from the sun.cabies is a highly contagious skin condition caused by an infestation by the itch mite Sarcoptes scabiei that is known to cause an intense itch that is particularly severe at night. Itching can also result from conditions that affect the nerves, such as diabetes, shingles (herpes zoster), or multiple sclerosis.
These will help in lessening the itch symptoms related to mental stress or psychogenic disorders. Dry, itchy skin can be triggered by stimuli at night, which can interfere with your resting and sleeping times. There are various mild skin conditions that cause night itchiness as well as several health issues that should be addressed.