💦 Eccrine Sweat Gland Overactivity Simulator

Sympathetic Cholinergic Nerve Overactivity

Overactive sympathetic cholinergic fibers drive excess sweat gland firing.

• Cholinergic: Nerve type (sympathetic, atypical)
• ACh: Neurotransmitter (acetylcholine)
• Childhood/teen: Onset (typical presentation)
• ~3%: Prevalence (general population)

Central and peripheral drive

Placeholder: hypothalamic and peripheral sympathetic pathways over-fire cholinergic fibers.

Eccrine Gland Hyperstimulation Mechanism

Muscarinic receptor overactivation triggers excess secretory coil activity.

• M3 muscarinic: Receptor (secretory coil)
• ~2-4M: Gland count (eccrine glands, body-wide)
• Ca2+ influx: Secretion driver (via ACh binding)
• Increased flow: Duct response (to skin surface)

Receptor-level cascade

Placeholder: ACh binds M3 receptors, raising intracellular calcium and fluid secretion.

Palmar/Plantar Sweat Production Surge

Glabrous palm and sole skin shows the densest gland concentration.

• ~600/cm²: Gland density (palms and soles)
• Emotional/thermal: Trigger (stress-predominant)
• High: Peak flow (relative to trunk skin)
• Grip/slip issues: Common complaint (functional impact)

Regional gland density

Placeholder: palms and soles carry the highest eccrine gland density in the body.

Axillary Sweat Gland Involvement

Axillary eccrine glands mix with apocrine units in overactive sweating.

• Eccrine+apocrine: Gland mix (axilla specific)
• Apocrine: Odor factor (bacterial breakdown)
• High: Social impact (visible staining)
• Botulinum toxin: Treatment target (common option)

Mixed gland activation

Placeholder: axillary sweating combines eccrine volume with apocrine odor components.

Primary Focal Hyperhidrosis Pattern

Bilateral, symmetric, focal excess sweating defines the clinical pattern.

• Bilateral/symmetric: Pattern (diagnostic hallmark)
• Idiopathic: Cause (primary form)
• ~30-50%: Family history (positive cases)
• Multiple: Treatment options (topical to surgical)

Diagnostic pattern summary

Placeholder: symmetric focal sweating without underlying secondary cause defines diagnosis.

Placeholder: primary hyperhidrosis is a distinct clinical diagnosis of exclusion.