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Quite a large number of responses were received from people who had found that peeling, scraping, or even touching potatoes causes itchy hands and skin reactions, usually solved by persuading a partner to do the potatoes, or using gloves. Scraping potatoes produces a very fine spray of juice which can cause itching of nose or eyes, and sometimes asthma. These people are probably allergic to potato and the allergy might become more extensive, so avoidance is sensible. Several had found that new potatoes produced much worse effects than old ones, explained by the fact that the solanine alkaloids are concentrated under the skin, and especially in the sprouts.