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Flashcards in Puberty Deck (10):

Name 3 factors that can affect puberty

Chronic diseases
Renal failure
Chrons Exercise (females)
Endocrine (thyroid, adrenal)
Psychological (emotional deprivation)
Moderate obesity = advanced puberty
Morbid obesity = delayed puberty


Describe the pubertal changes that occur in men

1. External genitalia: penic increases in size, scrotal pigmentation, rugal folds

2. Hair growth: moustache, beard, male pattern hair (head, axillae, body, pubic)

3. Linear growth: 8cm per year in growth spurt

4. Accessory sex organs: seminal vesicles develop secretory activity

5. Voice: larynx size increases and vocal cords thicken (deeper voice)

6. Psyche: more aggressive, increased libido, sexual potential develops


Describe the tanner stages of breast development

1.    No palpable glandular tissue, areola not pigmented

2.    Glandular tissue palpable. Nipple and areola project as single mound—breast bud

3.    Increased glandular tissue, breasts enlarge, increased size areola, contours breast and areola remain in a single plane

4.     Further breast enlargement, increased pigmentation areola. Areola and nipple form a secondary mound above the breast

5.     Mature form. Areola and nipple no longer project from the breast


Describe the tanner stages of pubic hair development

1. None

2.  Occasional wispy strands, usually along labia

3. More, darker, coarser hair extending superiorly over the pubis

4.       Dark, coarse, curly hair covering mons pubis in adult pattern, but not extending to medial aspects of the thigh

   5. Mature form, hair extends to thigh


What is precocious puberty?

Premature development of secondary sexual chacteristics (or menarche in girls).

At of before the age of 9. 


Caused by premature secretion of gonadotrophins (can be idiopathic or due to CNS lesions/meningitis)


Main factors influencing the onset of puberty

Pulsatile release of GnRH from the hypothalamus

Body weight


Treatment of delayed puberty

Constitutional delay: short-term low dose steroid treatment

Hypergonadotrophic: sex steroid replacement 

Hypogonadatrophic: sex steroid replacement, GnRH administration


Classification of delayed puberty

Constitutional: healthy children who have a slower rate of development than average. Height appropriate for bone age, family history

Hypogonadotrophic: defects in the CNS

Hypergonadotrophic: defects in the gonads


Briefly describe the development of secondary sexual characterstics in boys and girls

Early stages of pubertal changes are increase in size of the testis and pubic hair (age 10) 
Growth spurt begins ~11 and is more rapid than in girls, stops at 18
Penis elongates between 11-17
Development complete at 18

Breast buds and pubic hair begin to develop (age 8)
Growth spurt begins at ~9 and is complete at 14/15
Menarche begins between 10-16
Development complete at 16


Precocious pseudopuberty

Results from secretion of androgens from teh adrenal glands or testis. Virilisation occurs but sperm is not produced. 

Caused by adrenal hyperplasia. 


Patients have eleveated serum hydroxyprogesterone. May have adrenal tumours. 

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