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.
Use skin creams or lotion regularly, especially after bathing. Water-soluble bases, such as aloe vera, and menthol-based lotions work best. Bathe in warm -- not hot -- water. Hot water can dry your skin out and add to your itching problem. Use a mild soap when bathing and gently wash your skin.