Five months baby always screaming, may be physiological factors caused by, may also be the disease of the factors lead to. 1. Physiological factors: five-month-old children are usually conscious of the performance of pronunciation, so screaming is also a normal physiological phenomenon. Children may also scream when they are hungry or in certain poor conditions, such as not changing diapers or a noisy environment. 2. Pathologic factors: Certain diseases may also cause a child to scream, such as eczema, which can lead to itchy skin and irritability, thus causing screaming. Neurological or brain developmental abnormalities may also cause the child to be irritable and scream. It is recommended that if symptoms persist or worsen progressively, the child should be taken to a regular hospital for examination and targeted treatment after a clear diagnosis.