Thrombocytopenia can be caused by problems in the bone marrow or the immune system. The bone marrow may not make enough platelets, or the immune may destroy platelets inappropriately. Some of the ...

Medically reviewed by Doru Paul, MD A low platelet count—also called thrombocytopenia—means your blood has fewer than 150,000 platelets per microliter. Platelets are cells that help your blood clot.

Raynaud’s phenomenon causes blood vessels to narrow when a person experiences cold or stress. This decreases blood flow and may cause affected areas to feel cold. It commonly affects the ...

Treatment will depend on the cause of a person’s butt rash. The causes range from heat rashes and allergies to sexually transmitted infections. Some rashes may respond well to home remedies ...

Peter Gratton, M.A.P.P., Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at ...