Here is the list of some terms that is used in association with hyperhidrosis.

Anhidrosis: the deficiency or absence of perspiration
Asymmetric: not identical on both sides of a central line (lacking symmetry: most faces are asymmetric).
Axilla: armpit or underarm
Anticholinergic: pertaining to a substance that opposes the effects of acetylcholine ( a neurotransmitter); an example includes glycopyrrolate which interferes with the passage of parasympathetic nerve impulses stimulating sweat glands
Apoeccrine sweat glands1: Sweat glands that open directly onto the surface of the skin and are found mainly in the armpits. These glands develop during puberty and vary in number greatly from person to person.
Axillary: Of, or relating to, the underarm. Therefore, excessive underarm sweat is called axillary hyperhidrosis.

Bilateral: pertaining to, involving, or affecting two or both sides (right and left)
Botulinum type A toxin: injected into the affected areas of axillae, palms, and soles of the feet. This neurotoxin affects the nerves serving the eccrine glands, decreasing the release of acetylcholine. This technique is effective but expensive and can be quite painful when used in sensitive areas.

Compensatory: as in ‘compensatory hyperhidrosis‘ refers to a shift in regions of excessive sweating. This phenomenon is relatively common as an adverse effect related to a surgical intervention in attempts to neutralize axillary or palmar hyperhidrosis

Euhydrosis: a normal state of sweating
Focal: relating to a focus – focal hyperhidrosis is excessive sweating from specific regions such as the underarms, palms, soles or face.

Generalized: pertaining to being non-specific – generalized hyperhidrosis refers to excessive sweating from the body as a whole (not localized)
Gustatory: pertaining to taste or tasting – gustatory hyperhidrosis is excessive sweating in the facial, scalp, and neck regions associated with eating certain foods.

Hyperhidrosis (HH): a condition characterized by excessive sweating – either due to an underlying cause (secondary HH) or the idiopathic type, that is, having no known cause (primary HH).

Idiopathic: any disease or medical condition of unknown cause
Iontophoresis: for palm or foot hyperhidrosis, a home-use device applies an electrical current to plain tap water, driving salt ions into the skin. The mechanism of action is unknown but recent research suggests that a plug is formed, blocking the duct without damaging the sweat gland. An anticholinergic agent is often prescribed with this treatment to increase effectiveness

Palmar: relating to the palm of the hand
Palmoplantar: relating to both the palms and soles
Plantar: relating to the sole of the foot
Primary: in medicine, refers to a condition that has no underlying cause

Quality of life: refers to mental and physical factors that allows an individual to enjoy his/her life. In the healthcare field, conditions and therapies are often measured in terms of their impact (negative or positive) on these factors.

Regional: refers to a specific location or body area
Recalcitrant: resisting response to treatment (difficult to treat)

Secondary: in medicine, refers to a condition that has an underlying cause (or is secondary to another condition) 
Sympathectomy: surgery that interrupts a nerve pathway of the sympathetic or involuntary nervous system – effectively cutting nerve impulses to sweat glands

Sweat glands: A group of cells found in the skin that secrete sweat in order to regulate body temperature. The 3 types of sweat glands (eccrine sweat glands, apocrine sweat glands, and apoeccrine sweat glands) are controlled by the sympathetic nervous system, which controls involuntary body functions like breathing and pumping of the heart.

Sweat management specialist: A doctor, usually a dermatologist, who is trained and experienced in diagnosing and treating hyperhidrosis.

Sympathetic nervous system: A subsystem of the autonomic nervous system, which controls functions like pupil dilation, sweating, and digestion.

Unilateral: pertaining to one side of the body (either the right or left side)