 [ Symptoms ] is losing weight common while on on the depo provera shot [ Disease ] this could really be eczema or psoriasis the dermatologist can confirm it simple remedies — like adding oil to bathwater or using a good moisturizer on the skin — can also help if your baby is psoriasis become more severe it may need to be treated with light therapy or even oral medication if itching is a problem the doctor may also prescribe antihistamines and if it looks like there is a bacterial infection from scratching the rash for example she will prescribe oral antibiotics thanks