When are night sweats worrying?
When they are drenching — soaking sheets or nightclothes — over several weeks, and particularly with weight loss, fever or persistent swollen glands. Feeling warm at night is common and not the same thing.
Is hyperhidrosis treatable?
Yes, and better than most people realise. Aluminium chloride antiperspirant, iontophoresis, prescription tablets and botulinum toxin form a genuine ladder. Most people have only tried ordinary deodorant.
Why does my antiperspirant sting?
Almost always because it went on damp skin. Aluminium chloride must be applied to completely dry skin at bedtime and washed off in the morning. That change alone makes it tolerable.
Could my antidepressant be causing this?
Very likely if you take an SSRI or venlafaxine — sweating is a well-recognised effect. Raise it rather than stopping the tablet; a dose change or switch usually helps.
Is this the menopause?
Quite possibly, if you are in your forties or fifties. Over 45 the diagnosis is clinical and needs no blood test. HRT is highly effective for flushes and night sweats.
Could it be my thyroid?
Worth checking, particularly with weight loss, tremor, palpitations or heat intolerance. It is a simple blood test and an easily treatable cause.
I sweat only from my hands and it affects my work.
That is primary palmar hyperhidrosis, and it is treatable. Iontophoresis is particularly effective for hands, and the impact on work and daily life is a legitimate reason to pursue treatment properly.