While a resident at Scott & White of the Texas A&M University Health System, Dr. Greenberg's interest in drug reactions and alternative treatments to skin cancers blossomed. A series of patients with severe clinical reactions to imiquimod, but wonderful outcomes was recognized by Dr.'s Greenberg, Cohen, Orengo & Rosen. An article was written about these patients- and a presentation based on these patients earned Dr. Greenberg an award at the Texas Dermatological Society meeting of May 2006.

Greenberg HL, Cohen JL, Orengo I, Rosen T. Severe reaction to 5% imiquimod cream with excellent clinical and cosmetic outcomes, Journal of Drugs in Dermatology Vol 6, Issue 4; April, 2007 pgs 452-458.

While a resident at Scott & White Hospital of the Texas A&M University Health System, Dr. Greenberg co-authrored an article in the Archives of Dermatology. This article details a patient who had a non-healing ulcer that had been evaluated and treated by other providers as a stomal irritation. A non-healing sore had developed at the site of the patients stoma. When the patient was seen by Dr.'s Greenberg and Butler, a biopsy was performed of the ulcer because of the unusual history and lack of response to multiple topical therapies. When the biopsy results were returned, the ulcer was identified as metastatic colon cancer. The patient underwent surgery and evaluation by the oncology team after being diagnosed by the dermatology team at Scott & White.

Greenberg HL, Lopez L, Butler DF, Peristomal metastatic adenocarcinoma of the rectum, Archives of Dermatology Vol. 142, Oct. 2006 pgs. 1372-1373.

While on a dermatology elective at Henry Ford Hospital in Detroit, Dr. Greenberg worked with Dr.'s David Fivenson & Tor Schwayder on an article regarding the use of Lotrisone (betamethasone/clotrimazole) in pediatric patients. Lotrisone is a combination product that many physicians use to treat disorders of the skin when the diagnosis is in question. The major problems with Lotrisone are identified within the article- but are related to the high potency steroid component of the product: striae, thinning of the skin and blood vessels being brought to the surface were all seen as complications from long term drug use. The article suggests that Lotrisone should not be used in children, especially for extended periods of time because of the side effect profile.

Greenberg, H.L., Shwayder, T.A., Biezck, N., Fivenson, D.: Clotrimazole/ Betamethasone Diproprionate: A Review of Costs and Complications in the Treatment of Common Cutaneous Fungal Infections. Pediatric Dermatology Volume 19 (1), p.78-81, January/February 2002.

While a fellow and 1st year dermatology resident at the University of Wisconsin, Madison, Dr. Greenberg worked with Dr. Gary Wood on this journal article regarding the staging and monitoring of patients with Cutaneous T-Cell Lymphoma- a type of skin cancer that is not thought to be related to sun exposure, but is rather a type of lymphoma that preferentially goes to the skin- more advanced stages may involve internal organs.