The common stinging nettle (Urtica dioica) is a plant that is native to the UK and can reach heights of up to two metres. The tiny hairs on the plant's leaves can cause the skin to sting and swell. Although not typically threatening these stings will require some basic first aid treatment to alleviate any pain.
Signs and Symptoms
Stinging nettles are found in woodland areas, forests and overgrown gardens. Children will often suffer nettle stings whilst at play, whilst adults could be stung through activities like gardening and outdoor sports. Look out for the following symptoms:
Stinging sensation
Red patches that can appear raised when someone has white skin. The rash can be more difficult to distinguish when someone has brown or black skin
Red or white spots on the skin
Treatment
It’s best to get away from the area that contains stinging nettles so that no further stings occur. Next wash the affected area with soapy water, and tell the affected person to avoid scratching or itching the skin.
The discomfort should ease within 1-2 hours after being stung. It’s unusual to be allergic to these types of stings, but if the pain does not go away seek medical attention via a pharmacist or GP.
Although rare, it is possible for someone to have an anaphylaxis reaction when stung by nettles. In these cases, see if the casualty has an auto injector pen for treatment.
Dock leaves?
Most people have heard the old wives’ tale of rubbing a dock leaf against the affected area of skin after contact with stinging nettles.
Unfortunately there is no medical evidence to suggest that the dock leave counteracts the negative effects on the skin after a nettle sting. So why do people do it?
It’s hard to say - like many old wives' tales - exactly why techniques get written into folklore. However it is possible that the rubbing motion of the leaf combined with its sap can have a soothing feeling just like the soapy water / ice pack. Or it could just be the placebo / psychological effect of finding that dock leaf.