Washing the area immediately with an antiseptic solution will prove beneficial in getting rid of the sap contents. For this, a solution made with a few drops of tea tree oil in a glass of cold water is ideal, as tea tree oil is known for its ability to treat skin ailments. Chamomile tea and diluted lemon juice are also known to deep cleanse the area and is effective in the treatment of such rashes. Vitamin C is known for its skin healing properties. It boosts the immune system, enabling it to neutralize the effects of the poison oak. The application of a cold compress immediately on the affected area will reduce inflammation and itchiness. It will also prevent the formation of blisters. Crushing a few mint leaves in a blender and applying the paste obtained on the affected area of the skin will provide quick relief from the burning and itchy sensation and also reduce inflammation.
A margosa bath, prepared by boiling a few margosa leaves in a vessel of water is also advantageous. When the water gains a green hue, add it to your regular bath water. Margosa leaves are known for their ability to soothe and heal skin while reducing itchiness. The addition of oatmeal to bath water is also believed to relieve the effects of the rash caused by poison oak. The itchiness is usually unbearable, but scratching the skin does not lead to a spread of infection. However, the germs present below the nails could be the cause for infection. Hence, refrain from scratching the area with your nails. Instead, you could rub it with a soft towel, if needed, to prevent further damage to the sensitive skin.
answered by G R