Daily Management and Skin Care

Managing Bothnian type palmoplantar keratoderma (PPKB) is a daily commitment focused on controlling symptoms and protecting your skin. While there is currently no cure, a combination of specialized skin care, lifestyle adjustments, and, in some cases, systemic medications can significantly improve your comfort and quality of life ^[1][2].

Topical Care and Softening the Skin

The primary goal of daily care is to manage the hyperkeratosis (thickening of the skin). This is typically achieved using keratolytics—substances that help break down and shed excess keratin ^[3].

• Urea and Salicylic Acid: These are the most common topical treatments. Urea (often in concentrations of 10% to 40%) helps the skin retain moisture while softening the thickened layers ^[3]. Salicylic acid helps “unglue” the dead skin cells so they can be gently removed.
• Emollients: Using thick, fragrance-free moisturizers or ointments (like petroleum jelly) immediately after bathing can help lock in moisture and prevent the skin from cracking, which reduces the risk of infection ^[2].
• Gentle Debridement: After applying softening keratolytics, some patients find relief by gently using a pumice stone or specialized file to reduce skin thickness. This should always be done carefully to avoid causing sores or bleeding. Note: Do not soak the feet in water before filing, as extended water exposure will trigger severe pain and swelling in PPKB ^[4].

Managing the ‘Water Effect’

Because water exposure triggers rapid swelling and discomfort (the “hand-in-the-bucket” sign), modifying how you interact with water is essential ^[4][5].

• Limit Exposure Time: Keep showers and baths brief. Many patients find that keeping water contact under 5 minutes helps prevent the most severe swelling and burning ^[4][6].
• Protective Barriers: Use waterproof, cotton-lined gloves for household tasks like washing dishes or cleaning.
• Dry Thoroughly and Gently: After any water exposure, ensure your hands and feet are dried completely. Gently pat the skin dry rather than rubbing vigorously, as aggressive rubbing can easily tear or damage the fragile, water-logged skin. The “water effect” typically resolves relatively quickly once the skin is dry ^[5].

Controlling Excessive Sweating (Hyperhidrosis)

The chronic dampness caused by hyperhidrosis can lead to secondary issues like pitted keratolysis (small pits caused by bacteria) or fungal infections like athlete’s foot ^[4].

• Antiperspirants: High-strength, clinical-grade antiperspirants containing aluminum chloride may be used, though they can sometimes irritate sensitive or cracked skin.
• Botulinum Toxin: In some cases, injections of botulinum toxin (Botox) can be used to block the nerves that trigger sweating in the palms and soles ^[7][8].

(Note: While treatments like tap water iontophoresis are sometimes used for hyperhidrosis in other conditions, they require soaking the hands and feet in water for extended periods, making them agonizing and generally unsuitable for patients with PPKB).

Systemic Retinoids

For severe cases where topical treatments are not enough, a doctor may prescribe systemic retinoids like acitretin ^[9][10].

• How They Work: These oral medications help regulate skin cell production and can significantly thin the keratoderma, improving mobility and reducing pain ^[9][11].
• Monitoring: Retinoids are not a “quick fix” and require regular blood tests to monitor liver function and cholesterol levels ^[12][13]. Common side effects include very dry lips and skin peeling.
• CRITICAL SAFETY WARNING - Pregnancy Risk: Systemic retinoids like acitretin cause severe, profound birth defects. They are strictly teratogenic. Women of childbearing age must adhere to rigorous pregnancy prevention programs, utilizing highly effective birth control during treatment and for up to three years after stopping the medication ^[12].

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