Aldehyde, Ketone, Carboxylic Acid Aldehyde: Aldehyde is an organic compound which contain formyl group. This functional group, in its structure R-CHO, consist of carboxyl centre bonded to R group and hydrogen.
1 Infections, bites and stings, infestations, chronic diseases, allergic reactions, sun exposure, and dry skin are among the numerous causes of itching.  Anti-itch creams and lotions containing camphor, menthol, phenol, pramoxine (Caladryl, Tronolane), diphenhydramine (Benadryl), or benzocaine can bring relief.
You can apply an anti-itch cream (available over the counter) or take an over the counter antihistamine (such as diphenhydramine) to help with itch. You should keep the skin clean and dry, avoid immersing the skin in water, and also avoid applying irritating or drying chemicals such as alcohols.