My mother has been suffering from this problem for the last few years. The problem is that my mother sleeps well for four or five days but then she has difficulty sleeping again for seven or eight days. Lets sleep like four or five days Shyama Kali Kali doesn't sleep again for four or five days Why is this problem My mother has a little thyroid and a little hypertension but after taking medicine these have been normal for the last few years ???