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.
Treatment: Aloe for Rashes. To treat mild treating mild to severe skin conditions or reactions with aloe, it is best to apply the aloe on clean, dry skin. Depending upon the size of the area to be treated, typically one aloe vera stalkâs contents or roughly two tablespoons of pure aloe vera gel can be applied directly to the affected area.