Arrest of development occurs in the shape of total absence of the pudenda; absence or defective development, i. e. unusual smallness of individual parts, the labia majora and minora, or the clitoris; absence of the rima or of the commissures, i. e. unusual fissures, such as we see at the superior commissure, accompanied by eversion of the bladder and separation of the symphysis pubis.

Excess of development is met with as uniform or partial congenital enlargement of the labia, nymphae, and clitoris, causing the latter to resemble a penis; as increase in the number of individual parts, as of the nymphae, and as precocious or extravagant development during puberty.

Congenital anomalies of form affect particularly the nymphae; like the acquired anomalies, they present several varieties.

The diseases of tissue are primary or secondary; they consist in metastatic inflammatory processes, varying in degree and rapidity, accompanied by increased sebaceous secretion, great epidermal development, excoriation, oedema, superficial and profound suppuration, condensation and induration, gangrene of the external and internal labia; we meet with specific circumscribed inflammation and ulceration of the latter; among adventitious products, condylomatous excrescences occur in them and on the clitoris, varying in size and number, and occasionally producing extreme deformities. We also find hemorrhagic effusion occurring within the labia spontaneously, or in consequence of external violence (sanguineous tumors), and, besides steatomatous (fibroid) tumors, all the adventitious growths occurring in the cellular tissue at large.