Dr. John A Lenahan M.D.

Recommended Articles

• Can Eczema Flare-Up Anywhere on My Body?

  Eczema is the general term of a number of skin conditions. Doctors believe that the condition is passed on genetically and results from a disorder of the immune system. This disorder results in the overreaction of the system when it encounters certain triggers in the environment.Eczema can affect...

• What Causes Petechiae?

  What is petechia?The definition of petechia falls under the category of hemorrhaging. A petechia, or more commonly used in Latin plural, petechiae, are microscopically small dots which appear beneath the skin surface in red, brown or purple color. We refer to them in plural because they are barely...

• Rosacea: What to Expect When You Visit a Dermatologist

  Rosacea is a chronic disorder affecting the facial skin. It is characterized by sporadic eruptions of red patches on the cheeks, nose, forehead or chin. Over a period of time, the symptoms exacerbate, with the appearance of visible blood vessels if left untreated, the skin in the area develops...

• What is a Carbuncle?

  Carbuncle refers to a cluster of boils under the skin caused by the infection of hair follicles. The infected hair follicles form a small group of painful, reddish bumps on the skin which later get filled with pus. Carbuncles often form in hairy areas like the back and may also form in areas like...

• Does Ingrown Hair Always Require Medical Treatment?

  Hair deviating from its normal growth pattern; hairs that curl inwards or grows sideways deeper into the skin present embarrassing acne-like bumps that become an eyesore. Ingrown hairs also bring pain and infection in their wake.Medical treatments cover the entire spectrum from symptom alleviating...

• What Is Condyloma?

  IntroductionCondyloma is also known as genital warts. It is considered as a sexually transmitted disease (STD) that appears on the external genital region. It usually appears in the anal region, the upper vaginal portion, and in the urethra of males. The lesion appears raised and pinkish in...