Dizziness
Dry skin
Feeling hot
Inability to tolerate heat
Lightheadedness
Little or no perspiration
Muscle cramps and weakness
Skin flushing
Alcoholism
Amyloidosis
Bacterial infections
Certain drugs including morphine and botulinum toxin type A etc
Clogged sweat ducts
Dehydration
Dementia with Lewy bodies (DLB)
Diabetes mellitus
Exfoliative dermatitis
Fabry's disease
Gout
Guillain-Barre syndrome
Harlequin syndrome
Heat rash
Ichthyosis
Inherited conditions
Injury, especially burn
Multiple sclerosis (MS)
Multiple system atrophy (MSA)
Parkinson’s disease
Psoriasis
Radiation therapy
Ross syndrome
Scleroderma
Sjogren's syndrome
Skin damage
Vitamin B deficiency
Dermatologist
Neurologist