Ringworm of the baby’s scalp may actually be a misconception for many people; what is called ringworm of the baby’s scalp is actually not ringworm at all, but rather a common seborrheic dermatitis. This increase in cortex as well as thickening of the skin’s stratum corneum is caused by the normal secretion or overproduction of sebum by the baby shortly after birth. The thickened stratum corneum tends to adhere to the surface of the skin, especially the skin on the top of the head. The surface forms a very firm appearance of the skin, so it looks like a ringworm, but it is not actually a ringworm, but a seborrheic dermatitis. The formation of this seborrheic dermatitis is mostly related to the physical condition of the baby.