An overactive immune system, which is the source of autoimmune disease, is affected by sex hormones, according to a 2004 article by Vicki Brower in EMBO Reports. For instance, estrogen predisposes women to systemic lupus... More »

A lump in the neck can signal several medical conditions, such as enlarged lymph nodes due to a bacterial or viral infection, acne, autoimmune disease, thyroid disorder, tonsillitis, sebaceous cysts, allergies or cancer,... More » Health Pain & Symptoms

The evaluation of an isolated, swollen cervical lymph node consists of examining its characteristics, the patient’s risk factors and the presence of other clinical symptoms, according to K. M. Green Lerberg et al. in a 2... More »

MedlinePlus offers information at its website, including a short article about its purpose and links to other information resources including articles about the website, FAQs, use statistics and policies. The website als... More »

Ears turning red sporadically can be caused by a rare condition known as red ear syndrome, according to a 2013 article in The Journal of Headache and Pain. The condition can also occur naturally depending on a variety of... More » Health Pain & Symptoms

Sounds occurring in the ears without an external source is a symptom of tinnitus, according to Healthline. There are two types of tinnitus: objective and subjective. Objective tinnitus occurs when several people hear a p... More »

Heel spurs are a common source of pain when standing, and they can be caused by abnormal walking, improper shoes or running, according to WebMD. They can be treated by wearing a shoe insert, resting or wearing proper sho... More » Health Pain & Symptoms