Erythema Toxicum Neonatorum (ETN) is a common skin finding that affects healthy full-term babies. Several authors have commented on the possible relationship between ETN and the development of atopic conditions, such as atopic dermatitis or respiratory disease later in life. There is a paucity of research addressing this issue.

Inclusion Criteria:

• Children between the ages of 3-9 years who have had at least 2 asthma diagnoses within the last 2 years.
• Control subjects will be age matched and without an asthma diagnosis.

Exclusion Criteria:

• Children without accessible medical records

Case studies will include subjects between the ages of 3-9 years who have had at least 2 asthma diagnoses within the last 2 years. Patients will be selected based upon their ICD9 codes for asthma. Control subjects will be age matched and without an asthma diagnosis.