Table 1.

Symptoms, signs, and conditions indicative of testosterone deficiency.

Vasomotor and nervous symptoms:

• Hot flushes (similar to those of menopause in women)

• Episodes of sweating

• Insomnia and disturbed sleep rhythm

• Nervousness

Mood disorders and cognitive functions:

• Irritability and lethargy

• Decreased sense of well-being

• Lack of motivation

• Difficulties with short-term memory

• Depressive symptoms

Masculinity/virility:

• Decreased vigour and physical energy

• Diminished muscle mass (sarcopenia) and strength (sarcoasthenia)

• Loss of sexual body hair

• Abdominal obesity

• Gynaecomastia

Sexuality:

• Decreased interest or desire for sex

• Reduction of sexual activity

• Poor erectile function

• Limited quality of orgasm (unpleasurable orgasm)

• Weakness or reduction of ejaculation