Precocious puberty may be seen in all of the following conditions except:
Hypothyroidism and not hyperthyroidism cause precocious puberty.

In hypothyroidism
     ↓
↑TSH
     ↓
Stimulation of FSH
     ↓
Precocious puberty
If precocious puberty is associated with delayed bone age it suggests primary hypothyroidism
Granulosa - cell tumour
Head - injury
Corticosteroid intake
Hyperthyroidism