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.
It's not the anxiety itself that causes a rash, but the stress caused by anxiety. Stress puts your body in a state of extreme tension, and releases a great deal of cortisol and adrenaline into your blood stream-both of which are known to lead to skin reactions.tress also makes your skin more sensitive, so things that would not normally cause you to have a skin reaction (sunscreens, lotions, etc.) would create one on your skin. For reasons that are still not entirely clear, stress also causes skin conditions to get worse. If you have: 1  Psoriasis. 2  Eczema. 3  Acne. 4  Rosacea. 5  Herpes.