Parsnip - Dangers

Dangers

While the root of the parsnip is edible, the handling of its shoots and leaves requires protective clothing. Like many other members of the Apiaceae family, the parsnip contains furanocoumarin, a photosensitive chemical that causes a condition known as phytophotodermatitis. The condition is a type of chemical burn rather than an allergic reaction and should be treated as such. Symptoms include redness, burning, tingling, and blisters (often in the shape of the streak where the plant juices brushed against the body) within 24–48 hours of exposure.

When gardening parsnips, gloves and long sleeves are advised. If bare skin does come into contact with the upper part of a parsnip plant, the area should be washed immediately and kept out of sunlight. A cool, indoor area is best as a retreat, as sweat can aid in the absorption of the toxin, and sunlight activates its deleterious effects. Should a rash appear, the area may be treated similar to a burn and a physician or pharmacist ought to be consulted.

Today, most jurisdictions have wild parsnip on their list of noxious weeds or invasive species for this reason.

Polyacetylenes can be found in Apiaceae vegetables like parsnip where they show cytotoxic activities.