What could cause a fatty lump on the back of the neck of a 13-year-old of average weight?

Answer 1

Search webMD and read about cushings syndrome. One symptom of the syndrome is a "buffalo hump". http://my.webmd.com/hw/health_guide_atoz/hw71659.asp

A harmless fatty tumor caused a lipoma

Some small cysts are called subaceous cysts and can usually be removed in Dr. office with freezing before hand.You should check with Dr. just to make sure.

Inhaled steroids for the treatment of Asthma can cause a fatty lump.

The body tends to use fatty/lipid based substances to neutralize acidity in the body. Fatty tumors in a particular area indicate a high degree of acidity and inflammation in that area of the body. Acidity accumulates from an acidic diet and lifestyle (i.e. stress, pharmaceutical drugs, etc.), a congested lymph system, and under-functioning elimination channels where the acids are normally flushed out of the body (e.g. kidneys). Alkalizing the diet and cleansing the body with a high percentage of fresh fruits and vegetables, increasing hydration to flush out acids/toxins, activating the lymph system with regular movement/exercise, and rebuilding the elimination channels with herbs will address the underlying causes of the body forming fatty tumors.

Answer 2

It sounds like a fatty tumor. Best to see the doctor if it gets larger.