It is normal to feel some stress during pregnancy. Your body is going through many changes, and as your hormones change, so do your moods. Too much stress can cause you to have trouble sleeping, headaches, loss of appetite, or a tendency to overeatâall of which can be harmful to you and your developing baby. High levels of stress can also cause high blood pressure, which increases your chance of having preterm labor or a low-birth-weight infant.
1 Arborvitae: Plants toxic to dogs that can cause poisoning if eaten in large quantity. Look for skin allergic reaction. 2  Arrowgrasses: leaves can be toxic.  Arrowhead vine: can cause swelling in the mouth, swalloing difficulty, breathing problems, stomach upset.
Contact with the leaves or sap of skin-irritant plants can cause a condition called dermatitis, characterized by rashes, hives, swelling and itching of the skin. There are several different types of dermatitis. Poison ivy or poison oak cause allergic dermatitis.