Acne neonatorum: This is a common condition in newborns, caused by exposure to maternal hormones, and typically presents as a facial rash. It is usually benign and self-limiting.

Eczema (atopic dermatitis): A chronic skin condition that can start in infancy, often presenting as a facial rash, and is associated with other atopic diseases like asthma and allergies.
Seborrhoeic dermatitis: A skin condition that can cause a rash on the face, scalp, and other areas, often seen in infants and is usually self-limiting.
Contact dermatitis: A rash that occurs when the skin comes into contact with an irritant or allergen, which can happen to infants due to various products or substances.

Congenital syphilis: Although rare, it can present with a facial rash among other symptoms, and is critical to diagnose and treat to prevent long-term complications.
Herpes simplex virus (HSV) infection: Can cause a severe rash and is a medical emergency, especially in newborns, requiring prompt antiviral treatment.
Staphylococcal scalded skin syndrome (SSSS): A serious condition caused by staphylococcal toxins that can lead to widespread skin lesions and is life-threatening if not treated promptly.

Incontinentia pigmenti: A rare genetic disorder that affects the skin, hair, teeth, and central nervous system, and can present with a rash in infancy.
Epidermolysis bullosa: A group of rare genetic conditions that result in fragile skin and blisters, which can appear as a rash and require careful management to prevent complications.
Langerhans cell histiocytosis: A rare disorder in which the body accumulates too many immune cells called Langerhans cells, which can lead to skin rashes among other symptoms.