What to do about lack of sleep/insomnia that may be causing me to hear voices. no history mental illness, only asthma. no additional stressors etc.?

See psychiatrist: While lack of sleep/insomnia can cause the brain to do funny things, you need to be evaluated by a psychiatrist to ensure the voices are sleep deprecation derived and not from early schizophrenia.

Insomnia: Sleep hygiene helps. Also, explore with your primary care doc. Possibility of medications attributing to symptoms.

See below: Hearing voices is not normal, period. This is no part of asthma. Get in control of your sleep - sleeping pills etc, if that doesn't help, see a mental health professional.

Sleep?: Sleep is important and insomnia is very common . U don't need to be suffering , all what u need to see your PCP for evaluation and treatment.