Possibly absolutely nothing to do with being four months postpartum but I have no idea what’s causing it so I’m going to use it as a starting point for you wise Mumsnetter’s! At three months I stopped exclusively breastfeeding and switched entirely to formula, since then my postpartum hair loss has started and brought the craziest itching I’ve ever known with it. I’m losing handfuls of hair every time I wash it and lots during the day too but the itching is constant and unrelenting alongside that when I get changed in the evening a noticeable amount of dry skin is falling off of my thighs. I have never suffered with dry skin/excema before and my legs actually aren’t itchy, they just seem to be shedding for want of a better word 
NOT envy. I thought it was perhaps a vitamin deficiency so I’m taking biotin, vitamin d and b12 but nothing seems to be making any difference. I’ve seen people laud Body Shop’s ginger hair range as a miracle worker for itchy scalp but again,no difference. It’s driving me insane! Does anybody have any experience/tips? For reference this is my third baby and I’ve never suffered like this before. I haven’t had a period post baby yet,again not sure if this is relevant.