Posibleng Mga Sanhi para sa Panghihina ng Biyas Kakulangan ng Bitaminang B12 Lumbar Disk Herniation Hypothyroidism Polymyalgia Rheumatica Primary Progressive Multiple Sclerosis Muscular Dystrophy Duchenne Muscular Dystrophy Chronic na Inflammatory Demyelinating Polyneuropathy Multifocal Motor Neuropathy Multiple Sclerosis Leigh's Disease Malalang Intermittent Porphyria Polymyositis Myopathy Spinal Cord Compression Glycogen Storage Disease Type 2 Myotonic Dystrophy Spinal Muscular Atrophy Spinal Muscular Atrophy Type 3 Namamanang ATTR Amyloidosis Lambert Eaton Myasthenic Syndrome Spinal Muscular Atrophy Type 1 Amyotrophic Lateral Sclerosis Type 9 Amyotrophic Lateral Sclerosis Type 4 Homocystinuria Botulism Pinsala sa Ulo