Write dowen the casues of amenorrhoea

Casues of amenorrhoea :
A.Physiological causes:
1.Before Puberty 
2.Pg
3. During lactation 

4.After menopause

B.pathological causes:

 a. Primary amenorrhoea

1.congenitally absences

2.Abnormal chromosomal pattern.

3.Imperforate   hymen

4.pituitary infantilism

5.Non canalization of lower genital tract 

  b. Secondary amenorrhoea

1.Hysterectomy 

2.Disorder of adrenal gland 

3.Pitutary disorder

4.Disorder of Overy

5.Juvenili DM 

                                                                                                              [ Ref -D.C.Dutta]