How can I treat Stretch marks?

Dear Ask The Doctor: Hi, i have BAD stretch marks on my upper thighs and some on my boobs and hips ones on my thighs are puply colour there quite deep aswell so very noticeable.

Dear Lisa: Stretch marks or striae are caused due to the stretching of the skin and increased levels of the hormone cortisone in the body. Stretch marks are seen during pregnancy, weight gain and in diseases like cushing's syndrome and adrenal dysfunction. Most stretch marks decrease over a period of time but never completely go away. No treatment is needed unless for cosmetic reasons. You may need to consult your doctor or dermatologist for treatment options like tretinoin cream, microdermabrasion and laser therapy.