General Practitioners

• Ear Infections
  Dr. Koenig suggested allergy testing and we discovered my son has a multitude of environmental allergies that may have contributed to the ear infections... (read more here)

Ophthalmologists

• Glaucoma
  The “D” in Allegra-D and Claritin-D refers to the decongestant pseudoephedrine. This and the decongestant phenylpropanolamine are used alone or in conjunction with other medications to relieve nasal congestion. Side effects include nervousness and difficulty sleeping. Some patients, especially those with enlarged prostates, may have difficulty urinating. Many of these side effects can be avoided by giving the pediatric dose, which is one-half of the adult dose. Decongestants should not be taken by patients with hypertension, glaucoma, diabetes, or thyroid problems without your doctor’s approval.

Internists

• Internal Medicine
  He completed an Internship and Residency in Internal Medicine at Northwestern University in Evanston, Illinois. Prior to Fellowship, Dr. Koenig worked as a Hospitalist in Waukesha, Wisconsin.

Endocrinologist

• Diabetes Care
• Thyroid

Dermatologists

• Eczema

Allergists

• Allergies
  Some of the newer antihistamines are considered to be “low sedating.” This means that while over-the-counter antihistamines cause sedation in more than 30% of patients, and decrease motor function and mental acuity in even more, these newer antihistamines only cause sedation in a few patients out of a hundred. Zyrtec causes sedation in about 7% of adults (4% of children), while about 6% of patients on Astelin are sedated. Because there is a small possibility of sedation, care should be taken with the first few doses. You will need to stop the antihistamines four days prior to allergy testing.