Mildly low testosterone in women usually does not have obvious symptoms. If persistently low or severely low, symptoms such as irregular menstruation, weakening of muscle strength and hair loss may occur. 1. Irregular menstruation: testosterone is a kind of steroid hormone, female ovaries can secrete a small amount of testosterone, when female testosterone is seriously low, it is mostly due to the abnormal function of the ovaries, which will easily cause irregular menstruation. 2. Weakening of muscle strength: testosterone has the function of maintaining muscle strength, etc. When female testosterone is seriously low, it will weaken the muscle strength and cause fatigue and weakness. 3. Hair loss: female hair needs testosterone to maintain, when testosterone in female body is seriously low, it is easy to have hair loss, baldness and other phenomena. Testosterone plays an important role in women. If you have low testosterone, you should consult a doctor in time to find out the cause of the disease and receive treatment as soon as possible.